Arithmetic and Geometric Progressions

12+9+6+.........
is equal to (i) -30, (ii) -100?

Arithmetic and Geometric Progressions

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.

Problem 21: Arithmetic and Geometric Progressions

If the value of Fiat car depreciated by 25 per cent annually, what will be its estimated value at th...

Problem 49: Arithmetic and Geometric Progressions

Find three numbers in G.P. such that their sum is 130, and their product is 27,000.

The Sum of three numbers in G.P. is 35 and their product is 1000. Find the numbers.

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...

Problem 35: Arithmetic and Geometric Progressions

Sum the following series: 1 1/2 + 2 1/4 + 3 3/8 + ------------- to 8 terms.

Problem 34: Arithmetic and Geometric Progressions

Sum the following series: 1 - 1/2 + 1/4 - 1/8 + ------------- to 12 terms.

Problem 38: Arithmetic and Geometric Progressions

Sum the n terms series: 2 1/2 - 1 + 2/5 - -----------.

Problem 40: Arithmetic and Geometric Progressions

Sum the n terms series: (a + b) + (a2 + 2b) + (a3 + 3b) + -----------.

Problem 55: Arithmetic and Geometric Progressions

There are four numbers, the first three are in A.P. and the last three in G.P., the sum of the first...

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...

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...

Problem 36: Arithmetic and Geometric Progressions

Sum the following series: √2 + √6 + √18 + ------------- to 10 terms.

E1: Which term of series

12+9+6+......... is equal to (i) -30, (ii) -100?

Problem 61 : Arithmetic and Geometric Progressions

If a, b, c are in A.P., and a, b, (c+1) are in G.P., show c=(a-b)2

Problem 47: Arithmetic and Geometric Progressions

Find the infinite G.P. whose first term is 1/4 and the sum is 1/3.

If 10th term of an A.P. is 15 and the 15th term is 10, find the series.

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Problem 53: Arithmetic and Geometric Progressions

Three numbers whose sum is 18 are in A.P.; if 2,4,11 are added to them respectively, the resulting n...

Find the 20th term of the A.P. 80, 75, 70, …. Calculate the number of terms required to make the sum equal to zero

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

Problem 37: Arithmetic and Geometric Progressions

Sum the n terms series: 1/√3 + 1 + 3√3 + -----------.

Problem 13: Arithmetic and Geometric Progressions

If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)

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.

Problem 27: Arithmetic and Geometric Progressions

Find n if 1/217 is the nth term of the series 16, 8, 4, ...?

Problem 51: Arithmetic and Geometric Progressions

Find five numbers in G.P., such that their product is 32 and the product of the last two is 108.

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

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.

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?

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

Problem 15: Arithmetic and Geometric Progressions

If a, b, c are in G.P., prove that a(b2+c2)=c(a2+b2)

Problem 25: Arithmetic and Geometric Progressions

Which term of the series 1, 2, 4, 8, ... is 256?

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

Problem 64 : Arithmetic and Geometric Progressions

A manufacturer reckons that the value of the machine costing him $18,750 depreciates each year by 20...

Problem 33: Arithmetic and Geometric Progressions

Sum the following series: 1024 + 512 + 256 + ------------- to 15 terms.

Problem 39: Arithmetic and Geometric Progressions

Sum the n terms series: 0.3 + 0.03 + 0.003 + -----------.

The 4th term of an A.P. is 64 and the 54th term is -61, Show the 23rd term is 16½

Problem 26: Arithmetic and Geometric Progressions

Is 1/3125 a term of the series 25, 5, 1,...?

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.

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.

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

Problem 52: Arithmetic and Geometric Progressions

The continued product of three numbers in G.P. is 27, and the sum of theeir products in pairs is 39....

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 ...

Arithmetic and Geometric Progressions

Arithmetic and Geometric Progressions

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