Math Reasoning Questions for Competitive Exams
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Q.No: 1
If ratio of two numbers is 2 : 5, their H.C.F is 57 then find numbers?
- A. 106, 318
- B. 160, 800
- C. 104, 285
- D. 212, 265
Correct Ans: C
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Q.No: 2
Two cylinders of equal volume have heights in the ratio 25:49. The ratio of their radii is?
- A. 7:5
- B. 5:7
- C. 1:5
- D. 7:1
Correct Ans: A
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Q.No: 3
In what ratio tea of Darjling (Rs.280/kg) mixed with tea of Assam (Rs.220/kg) so that mixed tea when sold at rate 294 Rs/kg, gives 20% profit?
- A. 7 : 5
- B. 5 : 7
- C. 3 : 4
- D. 1 : 3
Correct Ans: B
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Q.No: 4
For any integer n, what is HCF (22n + 7, 33n + 10) equal to?
- A. n
- B. 1
- C. 11
- D. 13
Correct Ans: B
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Q.No: 5
The sum of the ages of the 4 members of Gupta family is 140 years. 5 years ago the ages of the 4 members Sweety, Rahul, Mrs Gupta and Mr Gupta were in the ratio of 2:3:7:8. Mrs. Gupta dies after 13 years, after how many years would Sweety be as old as the present age of his mother and average age of the remaining members at that time?
- A. 30 years, 59 years
- B. 29 years, 60 years
- C. 30 years, 61 years
- D. 29 years, 63 years
Correct Ans: C