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252 can be expressed as a product of ...

252 can be expressed as a product of primes as `2xx2xx3xx3xx7` (b) `2xx2xx2xx3xx7` (c) `3xx3xx3xx3xx7` (d) `2xx3xx3xx3xx7`

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120 can be expressed as a product of its prime factors as (a) 5 xx 8 xx 3 (b) 15 xx 2^3 (c) 10 xx 2^2 xx 3 (d) 5 xx 2^3 xx 3

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(3.7xx3.7+2.3xx2.3+2xx3.7xx2.3)/(4.6xx4.6-3.4xx3.4)=

The unit place digit of H.C.F. of 2^(2)xx3^(2)xx5^(3)xx7,2^(3)xx3^(3)xx5^(2)xx7^(2) and 3xx5xx7xx11 is

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RS AGGARWAL-HCF AND LCM OF NUMBERS-All Questions
  1. Find the factors of 330. (a) 2xx4xx5xx11 (b) 2xx3xx7xx13 (c) 2xx3xx...

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  2. Find the factors of 1122. 3xx9xx17xx2 (b) 3xx11xx17xx2 (c) 9xx9xx1...

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  3. 252 can be expressed as a product of primes as 2xx2xx3xx3xx7 (b) 2x...

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  4. Which of the following has most number of division? (a) 99       (b...

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  5. A number n is said to be perfect if the sum of all its divisors (ex...

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  6. (1095)/(1168) when expressed in simplest form is (13)/(16) (b) (15)...

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  7. Reduce (128352)/(238368) to its lowest terms. 3/4 (b) 5/(13) (c) 7/(13...

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  8. The simplest reduction to the lowest terms of (116,690,151)/(427,863,8...

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  9. The highest common factor of 0 and 6 is (a) 0          (b) 3       ...

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  10. The H.C.F. of 2^2xx3^3xx5^5,\ \ 2^3xx3^2xx5^2xx7 and 2^4xx3^4xx5xx7...

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  11. The H.C.F. of 2^4xx3^2xx5^3xx7,\ \ 2^3xx3^3xx5^2xx7^2 and 3xx5xx7xx...

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  12. H.C.F. of 4xx27xx3125 ,\ \ 8xx9xx25xx7 & 16xx81xx5xx11xx49 is (a) 1...

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  13. Find the highest common factor of 36 and 84. (a) 4         (b) 6      ...

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  14. Even numbers are formed by taking at least two at a time from the numb...

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  15. The H.C.F. of 204, 1190 and 1445 is (a) 17       (b) 18       (c) 1...

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  16. Which of the following is a pair of co-primes? (a) (16, 62)     ...

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  17. The H.C.F. of 2923 and 3239 is (a) 37       (b) 47       (c) 73    ...

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  18. The H.C.F. of 3556 and 3444 is (a) 23         (b) 25        (c) 26 ...

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  19. The L.C.M. of 2^3xx3^2xx5xx11 ,\ \ 2^4xx3^4xx5^2xx7 and 2^5xx3^3xx5...

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  20. Find the lowest common multiple of 24, 36 and 40. (a) 120    (b)...

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