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Important Formulas
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Banker's Discount
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Probability
Problems on Ages
Problems on H.C.F & L.C.M
Problems on Numbers
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Ratio and Proportion
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Simplification
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Time and Distance
Time and Work
True Discount
Volume and Surface Area
Practice Questions
Note: You can add tough questions into your favourite list for second revision. 
How many of the following numbers are divisible by 132 ? 264, 396, 462, 792, 968, 2178, 5184, 6336  
A.  5 [Wrong Answer] 
B.  4 [Correct Answer] 
C.  6 [Wrong Answer] 
D.  7 [Wrong Answer] 
View Answer
Explanation:
Answer : B Discuss it below :132 = 11 X 3 X 4. Clearly, 968 is not divisible by 3 None of 462 and 2178 is divisible by 4. And, 5184 is not divisible by 11. Each one of the remaining four numbers is divisible by each one of 4, 3 and 11. So, there are 4 such numbers. Click here for more comments 
If the number 653 xy is divisible by 90, then (x + y) =?  
A.  2 [Wrong Answer] 
B.  3 [Wrong Answer] 
C.  4 [Correct Answer] 
D.  6 [Wrong Answer] 
View Answer

3251 + 587 + 369  ? = 3007  
A.  1200 [Correct Answer] 
B.  1300 [Wrong Answer] 
C.  1375 [Wrong Answer] 
D.  1250 [Wrong Answer] 
View Answer
Explanation:
Answer : A Discuss it below :3251 + 587 + 369 = 4207 4207  3007 = 1200. Click here for more comments 
The sum of fist 45 natural numbers is :  
A.  1035 [Correct Answer] 
B.  1280 [Wrong Answer] 
C.  2070 [Wrong Answer] 
D.  2140 [Wrong Answer] 
View Answer
Explanation:
Answer : A Discuss it below :Let S_{n} = (1 + 2 + 3 + ... + 45). This is an A.P. in which a = 1, d = 1, n = 45. S_{n} = Ayyanagouda Said on 20170308 03:30:07 =45*(45+1)/2 =1035 Ayyanagouda Said on 20170308 03:29:27 =n*(n+1)÷2 45*(45+1)÷2 ÷1035 Click here for more comments 
The smallest 3digit prime number is :  
A.  101 [Correct Answer] 
B.  107 [Wrong Answer] 
C.  109 [Wrong Answer] 
D.  113 [Wrong Answer] 
View Answer
Explanation:
Answer : A Discuss it below :The smallest 3digit number is 100, which is divisible by 2. 100 is not a prime number. √101 <11 and 101 is not divisible by any of the prime numbers 2, 3, 5, 7, 11. So 101 is a prime number Hence 101 is the smallest 3digit prime number. Click here for more comments 
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