100 IQ international level

1.

What is the sum of all digits which appear in all integers from 10 to 100 ?

• 855

• 856

• 910

• 911

उत्तर:

856

Reason:

answer is in this link https://www.youtube.com/watch?v=k8BsEUtb1a4

2.

ABCD is a square. One point on each of AB and CD; and two distinct points on each of BC and DA are chosen. How many distinct triangles can be drawn using any three points as vertices out of these six points ?

• 16

• 18

• 20

• 24

उत्तर:

20

Reason:

explanation link:-  https://www.youtube.com/watch?v=uoMImYui9nE

3.

A box contains 14 black balls, 20 blue balls, 26 green balls, 28 yellow balls, 38 red balls and 54 white balls. Consider the following statements :

1. The smallest number n such that any n balls drawn from the box randomly must contain one full group of at least one colour is 175.
2.The smallest number m such that any m balls drawn from the box randomly must contain at least one ball of each colour is 167.
Which of the above statements is correct?
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• 1 only

• 2 only

• Both 1 and 2

• Neither 1 nor 2 

उत्तर:

Both 1 and 2

Reason:

explanation link:- https://www.youtube.com/watch?v=FsnLb1yBq8o