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The value of x when (25)(x) = (85)(10) i...

The value of x when `(25)_(x) = (85)_(10)` is:

A

2

B

8

C

40

D

can't be determined

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QUANTUM CAT-NUMBER SYSTEM-QUESTION BANK
  1. A number consists of two digits. The sum of the digits is 11, reversin...

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  2. If a number of two digit is 'k' times the sum of its digits then the n...

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  3. The value of x when (25)(x) = (85)(10) is:

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  4. Which one is an invalid number?

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  5. (35)(n) , (37)(n), (45)(n) and (51)(n) all are written in base n then ...

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  6. The last three digits in the binary representation of (365247728)(10) ...

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  7. The last three digits, if (12345956)(10) is expressed in binary system...

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  8. The last four digits in the binary representation of (8009)(10) is :

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  9. A number of decimal system when represented in binary system then its ...

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  10. When a two digit number is reversed, the new number is reduced by 63 a...

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  11. If (25)(n) xx (31)(n) = (1015)(n) then the value of (13)(n) xx (52)(n)...

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  12. What is the decimal equivalent of the hexadecimal number ubrace((100.....

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  13. If the decimal number 2^(111) is written in the octal system, then wha...

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  14. Match list I(Binary) with list II (Octal) and select the correct answe...

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  15. Find the 10th term of the following series 7,10, 13,16,…..etc.

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  16. Find the sum of the 10 terms of the following series -11, -8, -5, -2……...

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  17. Find the arithmetic mean of the following -17, -13, -9, -5, -1,………

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  18. Find the 6th term of 2,4,8,……….

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  19. Find the sum of 7 terms of following series 1,3,9,27,81…… .

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  20. Find the Geometric mean of 3, 9, 27.

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