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The unit's digit of the number 6^(256)-4...

The unit's digit of the number `6^(256)-4^(256)` is

A

7

B

0

C

1

D

4

Text Solution

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The correct Answer is:
B
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KIRAN PUBLICATION-POWER, INDICES AND SURDS-Type -V
  1. What will be the remainder when 252^(126)+244^(152) is divided by 10 ?

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  2. If 4^((x+y))=256 and (256)^((x-y))=4, what are the value of x and y ?

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  3. The unit's digit of the number 6^(256)-4^(256) is

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  4. What is the value of positive square root of (69+28sqrt(5)) ?

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  5. 3^(11)+3^(12)+3^(13)+3^(14) is divisible by

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  6. 4^(11)+4^(12)+4^(13)+4^(14) is divisible by

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  7. What is the unit's digit of 125^(125)+216^(216) ?

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  8. Which value among 3^(200), 2^(300) and 7^(100) is the largest ?

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  9. If ((x)/(y))^(5a-3)=((y)/(x))^(17-3a), what is the value of a ?

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  10. How many 100 digit positive number are there ?

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  11. What is the unit digit of (217)^(413)xx(819)^(547)xx(414)^(624)xx(342)...

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  12. Find the value of {(49)^((3)/(2))+(49)^(-(3)/(2))}

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  13. Calculate the total number of prime factors in the expression : (4)^(1...

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  14. Which value among 3^(200), 2^(300) and 7^(100) is the largest ?

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  15. The square root of 14+6sqrt(5) is

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  16. If (3+2sqrt(5))^(2)=29+ksqrt(5), then what is the value of k?

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  17. What is the unit's digit of 29^(136) ?

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  18. What is the unit's digit of 16^(10) ?

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  19. Find the unit place digit in (194)^(102)+(294)^(103)

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  20. If N=4^(11)+4^(12)+4^(13)+4^(14), then how many positive factors of N ...

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