MBA Exam

Find the sum of all the three digit numbers having at least one odd digit.

1) 396550
2) 440950
3) 432600
4) 440150
5) 371200

Read Solution (Total 1)

4) 440150

= (1 + 2 + 3 + ...999) - (200 + 202 + ... + 400 + 402 + ... + 600 + ... 800 + ...)
= (494550) - (200*5*4)(1 + 2 + 3 + 4) - (2 + 4 + 6 + 8)(4*5) - (4*5)(20 + 40 + 60 + 80)
= 440150
11 years agoHelpfull: Yes(0) No(0)

MBA Other Question

A monkey wants to climb up a pole of 50m height.He first climbs up 1m but he falls back by the same height.again he climbs up 2m but he falls back by 1m.Once again he climbs up 3m but he falls back by 1m.Again he climbs up 4m but he falls back by 1m.In this way he reaches at the top of the pole.if it is known that the monkey needs 10 sec for 1m in upward direction and 5 sec for 1m in downward direction,then the total time required by monkey to reach at the top of the pole.when he reaches at the top he wont slip back.the total time required by monkey to reach at the top of the pole is:-

1) 9 min. 10 sec
2) 10 mins.
3) 8 min. 20 sec.
4) none of these
What is the smallest integer n such that square root of n + square root of (n+2005) is an integer?

1) 217
2) 4568
3) 39204
4) 459988