Four numbers are such that the first three are in.A.P while the last three are in G.P. If the first number is 6 and common ratio of G.P. is `1/2` the the number are (A) 6,8,4,2 (B) 6,10,14,7 (C) 6,9,12,6 (D) 6,4,2,1

Comprehension (6 to 8) Given a special sequence, a, b, c, d such that first three number are in A.P. while the last three are in G.P. If the first number is 18 and common ratio of G.P. is 1/2 , then answer the following questions The value of c+d is given by 9 (b) 10 (c) 11 (d) 12

a,b,c,d,e are five numbers in which the first three are in A.P and the last three are in H.P .If the three numbers in the middle are in G.P then the numbers at the odd places are in

In a set of four numbers, the first three are in G.P. and the last three are in A.P. with difference 6. If the first number is the same as the fourth, find the four numbers.

Three numbers are in the ratio 1:2:3 and their HCF is 6, the numbers are (a) 4, 8, 12 (b) 5, 10, 15 (c) 6, 12, 18 (d) 10, 20, 30

The first term of G.P. is 2 and the sum to infinity is 6. Find the common ratio.

If the sum of first three numbers in G.P. is 21 and their product is 216 , then the numbers are

The sum of first three terms of a G.P. is (1)/(8) of the sum of the next three terms. Find the common ratio of G.P.

Let 3 non-zero distinct real numbers be in A.P. and their squares in G.P. Then number of possible values of common ratios of G.P. is (1) 2 (2) 3 (3) 5 (4) 6

Four numbers are in G.P. The sum of first two numbers is 4 and the sum of last two numbers is 36. Find the numbers.

If x ,2y ,3z are in A.P., where the distinct numbers x ,y ,z are in G.P, then the common ratio of the G.P. is a. 3 b. 1/3 c. 2 d. 1/2