IQ Contest, Daily, Weekly & Monthly IQ & Mathematics Competitions

Question No 1

The sum of first 45 natural numbers is:

Solution!
Let Sn = (1 + 2 + 3 + ... + 45)
This is an A.P. in which a = 1, d = 1, n = 45 and l = 45
Sn =n/2(a + l)=45/2x (1 + 45)   = (45 x 23)   = 1035.
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Question No 2

A person Travels 50 km per hour. If we increase his speed by 10 km per hour, how many minutes will it take to cover 7500 m.

Solution!
Speed= 50 km per hour
If the speed is increased by 10 kilometre per hour
Then the new speed= 60 km per hour
So distance covered in 1 hour=60 km/ hr
Then the distance covered in 60 minute= 60000
Distance covered in 1 minute=1000m
The new speed 1000 per minute=1000 m /min
Distance to be covered 7500 m= 7500 meters.
Time=7500/1000=7.5 min
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Question No 3

X is to '3rd Last' as B is to

Solution!
No explanation available for this question..

Question No 4

The temperature in 0 F on 20 days during the month of June
was as follows:
70 F, 76 F, 76 F, 74 F, 70 F, 70 F, 72 F, 74 F, 80 F,
74F,74F,78F,76F,78 F,76F,74F,78F,80F,76F
What is the mode of the temperature for the month of June?

Solution!
76 and 78 is the highest occurrence in series..

Question No 5

61.5, 63, 64.5, ___, 67.5, 69.
Find the missing.

Solution!
Difference of 1.5.

Question No 6

In a family , there are six members A,B,C,D,E, and F. A and  B are married couples. A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is daughter in law of F, whose husband has died. h ow many male members are there in the family?

Solution!
A is male.B the wife is female. C, the brother is male. D the son is male.E is the sister is female . F the mother is female. so, there are three male members.

Question No 7

A glass is made in 3 hours by 4 men. The same glass can be made in 6 hours by how many men?

Solution!
No explanation available for this question..

Question No 8

Forest cannot be completed without:

Solution!
No explanation available for this question..

Question No 9

A + B means A is the daughter of B ;
A x B means A is the son of B  and
A - B means A is the wife of B.
If P x Q - S, which of the following is true?

Solution!
Option (B)
P x Q - S means P is the son of Q who is the wife of S i.e. P is the son of S or S is the father of P.

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