Which term of the G.P, 2, 8, 32.......... up to n term is 131072?
8th term
9th term
7th term
6thterm
Water flows into a tank. The volume of water in the tank at each minute form an A.P. If the initial volume was 5 litres and becomes 6 times after 6 minutes. The speed of water increase is
5 litres/min
6 litres/min
15 litres/min
2 litres/min
The nth term of G.P 5, 25, 125 is
5n
5n-1
5n+1
n5
Which terms of the G.P 2, 2√2, 4,........ is 128?
12
13
14
15
If G is geometric mean of numbers a and b then G =
√ab
±√ab
ab
a/b
The A.M between pth and qth terms of an A.P is equal to the AM between rth and sth terms of the A.P. Then p+q =
r + s
r - s/r + s
r + s/r - s
r + s + 1
How many terms of the G.P 3, 32, 33,...... are needed to give the sum 120?
4
5
6
18
If the sum of 3 numbers in A.P is 24 and their product is 440, then the numbers are
5, 8, 11
6, 9, 12
7, 10, 13
4, 8, 12
The income of a person is 3,00,000 in the first year and he receives an increase of Rs. 10,000 to his income per year for the next 19 years. Then the total amount, he received in 20 years is
80,00,000
79,00,000
78,00,000
69,00,000
The number of terms of the A.P 3, 7, 11, 15--- to be take so that the sum is 406
10
