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Problems on Numbers
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Question
The numbers x, y, z are respectively proportional to 2, 3, 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax-8, then a is
Options
A. 6
B. 3/2
C. 3
D. 5/2
Correct Answer
6
Tags:
Bank Exams
Problems on Numbers
Search Results
1. The greatest perfect square number of 6 digits is
Options
A. 999001
B. 998001
C. 998009
D. 998101
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Correct Answer: 998001
2. The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is
Options
A. 85
B. 75
C. 70
D. 80
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Correct Answer: 80
3. Instead of multiplying by 25, a student multiplies that number by 52 and gets 324 more than correct answer. Then that number is
Options
A. 15
B. 12
C. 25
D. 32
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Correct Answer: 12
4. a and b are irrational numbers such that a+b = q is a rational number; then ab is
Options
A. always rational
B. sometimes rational
C. always irrational
D. some times irrational
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Correct Answer: always irrational
5. What least value must be assigned to '*' so that the numbers 451 * 603 is exactly divisible by 9?
Options
A. 7
B. 8
C. 5
D. 9
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Correct Answer: 8
6. Which one of the following is the minimum value of the sum of two integers whose product is 24?
Options
A. 25
B. 11
C. 8
D. 10
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Correct Answer: 10
7. What least value must be assigned to '*' so that the number 63576 * 2 is divisible by 8?
Options
A. 1
B. 2
C. 3
D. 4
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Correct Answer: 3
8. The least number to be added to 13851 to get a number which is divisible by 87 is
Options
A. 18
B. 43
C. 54
D. 69
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Correct Answer: 69
9. The least number that must be substracted from 63520 to make the result a perfect square is
Options
A. 30
B. 24
C. 14
D. 16
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Correct Answer: 16
10. What is the largest 4 digit number which is exactly divisible by 81?
Options
A. 9993
B. 9936
C. 9918
D. 9963
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Correct Answer: 9963
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