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Arithmetic and Geometric Progressions
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Arithmetic and Geometric Progressions
E2: If a, b, c are the pth, qth and rth terms of an A.p., show that
E2: If a, b, c are the pth, qth and rth terms of an A.p., show that
a(q-r)+b(r-p)+c(p-q)=0
Solution
Content Will update later
Arithmetic and Geometric Progressions
Problem 12: Arithmetic and Geometric Progressions
If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)
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The Sum of three numbers in G.P. is 35 and their product is 1000. Find the numbers.
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Problem 11: Arithmetic and Geometric Progressions
If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)
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Problem 49: Arithmetic and Geometric Progressions
Find three numbers in G.P. such that their sum is 130, and their product is 27,000.
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Problem 13: Arithmetic and Geometric Progressions
If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)
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Problem 27: Arithmetic and Geometric Progressions
Find n if 1/217 is the nth term of the series 16, 8, 4, ...?
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Problem 33: Arithmetic and Geometric Progressions
Sum the following series: 1024 + 512 + 256 + ------------- to 15 terms.
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Problem 31: Arithmetic and Geometric Progressions
If the mth term of a G.P. be n and the nth be m, then that the (m+n)th term is nm/m-n/mn/m-n.
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Problem 10: Arithmetic and Geometric Progressions
Find three numbers in G.P. such that their sum is 21 and the sum of their squares is 189
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Problem 16: Arithmetic and Geometric Progressions
If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)
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Problem 37: Arithmetic and Geometric Progressions
Sum the n terms series: 1/√3 + 1 + 3√3 + -----------.
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Problem 25: Arithmetic and Geometric Progressions
Which term of the series 1, 2, 4, 8, ... is 256?
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Problem 45: Arithmetic and Geometric Progressions
The ratio of the 4th to the 12th term of a G.P. with positive common ratio is 1/256. If the differen...
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Problem 30: Arithmetic and Geometric Progressions
The nth term of a sequence is 2.3n-1, show that it is in G.P. What is the first term and the common ...
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E2: If a, b, c are the pth, qth and rth terms of an A.p., show that
a(q-r)+b(r-p)+c(p-q)=0
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Problem 26: Arithmetic and Geometric Progressions
Is 1/3125 a term of the series 25, 5, 1,...?
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Problem 28: Arithmetic and Geometric Progressions
If the nth term of the series 1, 2, 4, 8, .... be the same as the nth term of the series 256, 128, 6...
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The 4th term of an A.P. is 64 and the 54th term is -61, Show the 23rd term is 16½
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Problem 40: Arithmetic and Geometric Progressions
Sum the n terms series: (a + b) + (a2 + 2b) + (a3 + 3b) + -----------.
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Problem 50: Arithmetic and Geometric Progressions
Find three numbers in G.P. such that their sum is 13/3, and the sum of their squares is 91/9.
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The sum of n terms of an A.P. is 2n². Find the 5th term.
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Problem 32: Arithmetic and Geometric Progressions
In a G.P. if the (p+q)th term is m and the (p-q)th term is n, prove that the pth term is √mn
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Problem 29: Arithmetic and Geometric Progressions
The 4th term of a G.P. is x, the 10th term is y and the 16th term is z. Show that xz=y2
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Problem 38: Arithmetic and Geometric Progressions
Sum the n terms series: 2 1/2 - 1 + 2/5 - -----------.
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Problem 35: Arithmetic and Geometric Progressions
Sum the following series: 1 1/2 + 2 1/4 + 3 3/8 + ------------- to 8 terms.
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Problem 24: Arithmetic and Geometric Progressions
The product of first and second terms of a G.P. is 256 and that of second and third terms is 16. fin...
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Problem 42: Arithmetic and Geometric Progressions
The sum of n terms of a G.P. whose first term is one and the common ratio is 1/2, is 1 127/128, find...
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Problem 47: Arithmetic and Geometric Progressions
Find the infinite G.P. whose first term is 1/4 and the sum is 1/3.
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Problem 46: Arithmetic and Geometric Progressions
The sum of infinite terms in a G.P. is 2 and the sum of their squares is 4/3. Find the series.
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Find the 20th term of the A.P. 80, 75, 70, …. Calculate the number of terms required to make the sum equal to zero
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Prove that if unity is added to the sum of any number of terms of the A.P. 3, 5, 7, 9,…. The resulting sum is a perfect square.
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Problem 36: Arithmetic and Geometric Progressions
Sum the following series: √2 + √6 + √18 + ------------- to 10 terms.
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Problem 44: Arithmetic and Geometric Progressions
How many terms of the G.P. 1, 4, 16, ... must be taken to have their sum equal to 341?
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E3: The pth term of an A.P. is q and the qth term is p. Show that the rth term is p+q-r and the (p+q)th term is zero
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Problem 43: Arithmetic and Geometric Progressions
In a G.P., the sum of n terms is 255, the last term is 128 and the common ratio is 2, find n.
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E1: Which term of series
12+9+6+......... is equal to (i) -30, (ii) -100?
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Problem 41: Arithmetic and Geometric Progressions
The sum of the first eight terms of a G.P. is five times the sum of the first four terms. Find the c...
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Problem 34: Arithmetic and Geometric Progressions
Sum the following series: 1 - 1/2 + 1/4 - 1/8 + ------------- to 12 terms.
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Problem 48: Arithmetic and Geometric Progressions
The first term of G.P. exceeds the 2nd term by 2 and the sum to infinity is 50, find the series.
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Problem 39: Arithmetic and Geometric Progressions
Sum the n terms series: 0.3 + 0.03 + 0.003 + -----------.
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If 10th term of an A.P. is 15 and the 15th term is 10, find the series.
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Minhajur Rahaman
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Sets
Long-Term Liabilities
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