Dhairya275 wrote:

How many multiples of 4 are there between 16 and 260 ?

A. 128

B. 64

C. 62

D. 61

E. 60

Any quick way of solving this ?

If you're not good at remembering formulas, then another option is to look for a pattern.

So, we want to know how many terms are in the sequence 20, 24, 28, . . .. 252, 256

Notice that:

20 = 4

(5)24 = 4

(6)28 = 4

(7)32 = 4

(8).

.

.

252 = 4

(63)256 = 4

(64)So, the number of terms in the sequence 20, 24, 28, . . .. 252, 256 is equal to the number of integers from

5 to 64 inclusive.

Well we have a formula (an easy formula) for finding this. We know that the number of integers from x to y inclusive is equal to y-x+1

So, the number of integers from

5 to 64 inclusive is equal to 64-5+1 = 60

Answer: E

_________________

Test confidently with gmatprepnow.com