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If n is a natural number, then 9^(2n)-4^...

If `n` is a natural number, then `9^(2n)-4^(2n)` is always divisible by 5 (b) 13 (c) both 5 and 13 (d) none of these

A

11

B

4

C

5

D

9

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MTG IIT JEE FOUNDATION-REAL NUMBERS-Exercise (Multiple Choice Questions) (LEVEL-1)
  1. A rational number p/q has a terminating decimal expansion if prime fac...

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  2. 2.bar(27) is

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  3. If n is a natural number, then 9^(2n)-4^(2n) is always divisible by 5 ...

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  4. If n is any natural number, then 9^(n)-5^(n) ends with

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  5. Which of the following rational numbers have non-terminating repeating...

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  6. If p and q are primes, then H.C.F. (p, q) will be

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  7. If H.C.F. (306, 1314) = 18, then L.C.M. (306,1314) is

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  8. Any positive integer cannot be of the form (q in N)

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  9. Which of the following is not a prime factor of 3825?

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  10. If p is prime, then H.C.F. and L.C.M. of p and p+1 would be

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  11. After how many places, the decimal form of (125)/(2^(4).5^(3)) will te...

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  12. n^(2)-1 is divisible by 8, if n is

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  13. 144 cartons of Coke Cans and 90 cartons of Pepsi Cans are to be sta...

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  14. There is a circular path around a sports field. Priya takes 21 minutes...

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  15. If d is the H.C.F. of 30, 72, find the value of x & y satisfying d=30...

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  16. Find the missing numbers x, y and z respectively in the following fact...

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  17. Express 2.4bar(178) in the form p//q.

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  18. The value of 1.bar(34)+4.bar12 is

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  19. For what least value of n where n is a natural number 5^n is divisible...

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  20. Which of the following is a pair of co-primes ?

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