Three geometric means between `1` and `256` are:
(A) 4,16,64
(B) -4,16,-64
(C) A and B both
(D) -4,-16,-66
O A
O B
O C
O D

The geometric mean between -9 and -16 is 12 b.-12 c.-13 d.none of these

{ ( 33 ) 2 − ( 31 ) 2 } 5 7 = (a)64 (b) 16 (c)32 (d) 4

The number of binary operations that can be defined on a set of 2 elements is (a) 8 (b) 4 (c) 16 (d) 64

A point O inside a rectangle A B C D is joined to the vertices. Prove that the sum of the areas of a pair of opposite triangles so formed is equal to the sum of the other pair of triangles. Given: A rectangle A B C D\ a n d\ O is a point inside it. O A ,\ O B ,\ O C\ a n d\ O D have been joined. To Prove: a r\ (A O D)+\ a r\ ( B O C)=\ a r\ ( A O B)+\ a r( C O D)

The HCF of two number is 16 and their difference is 16. Find the numbers. (A) 64,80 (B) 72,88 (C) 80,100 (D) 96,120

If A means +, B means -, C means x and D means ÷ , then 18 C 14 A 6 B 16 D 4=?

Find the product o three geometric means between 4 and 1/4.

AA n in N,49^(n)+16n-1 is divisible by (A)64 (B) 49(C)132 (D) 32

1, 2, 4, 8, 16, 32, 64, (.....), 256 (a) 148 (b) 128 (c) 154 (d) 164