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In a two –digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between the number and the number obtained by interchanging the digits is 54. What is 40% of the original number? a. 15.6            b. 24        c. 37.2           d. 39   e. none of these

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RS AGGARWAL-PROBLEMS ON NUMBERS-All Questions
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  2. The difference between a two digit number and the number obtained b...

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  3. In a two –digit positive number, the digit in the unit’s place is eq...

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  4. A number consists of 3 digits whose sum is 10. The middle digit is ...

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  5. A two digit number becomes five sixth of itself when its digits are...

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  6. If the square of a two digit number is reduced by the square of the...

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  7. A number consists of two digits such that the digit in the tens pla...

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  8. The digit in the unit’s place of  a number is equal to the digit in th...

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  9. In a two digit number, the digit in the unit’s place is more than t...

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  10. A certain number of two digits is three times the sum of ties digits...

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  11. A two digit number is such that the product of the digits is 8. Whe...

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  12. In a number of three digits, the digits in the unit’s place and in ...

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  13. In a three digit number the digit in the unit’s place is 75% of the...

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  14. The product of two fractions is (14)/(15) and their quotient is (35)/(...

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  15. In a pair of fractions, fraction A is twice the fraction B and the ...

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  16. The sum of the numerator and denominator of a fraction is 11. If 1 ...

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  17. The denominator of a fraction is 3 more than the numerator. If the ...

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  18. The difference between the numerator and the denominator of a fraction...

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  19. The numerator and denominator of a fraction are in the ratio of 2:3...

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