Numbers-Data Intensity 4 Questions and Answers Discussion Page.

18.	The sum of all two digit numbers divisible by 5 is?
	A.	1035
	B.	1245
	C.	1230
	D.	945

Answer: Option D

Explanation:

Required numbers are 10, 15, 20, 25, ..., 95

This is an A.P. in which a = 10, d = 5 and l = 95.

t_n = 95 ==> a + (n - 1)d = 95

10 + (n - 1) x 5 = 95

(n - 1) x 5 = 85

(n - 1) = 17

n = 18

Requuired Sum =	n	(a + l)	=	18	x (10 + 95) = (9 x 105) = 945.
	2			2

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Published by:Michael Daani

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