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The least number which is a perfect squa...

The least number which is a perfect square and is also divisible by 10, 12, 15 and 18 is

A

1600

B

900

C

3600

D

2500

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT PUBLICATION PUNJAB-LCM AND HCF-CHAPTER EXERCISE
  1. Five bells begin to toll together at intervals of 9s,6s,4s,10s and 8s,...

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  2. A General can draw up his soldiers in the rows of 10, 15 or 18 soldier...

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  3. The least number which is a perfect square and is also divisible by 10...

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  4. Sum of HCF and LCM of 4,20 and 28 is

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  5. HCF of two numbers is 28 and their LCM is 336. if one number is 112, t...

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  6. We call a number perfect if it is the sum of all its positive divisors...

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  7. The LCM of two prime numbers x and y, (x gt y) is 161 . The value ...

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  8. If a = 3^(129) xx 5^128 xx 7^22 b = 3^128 xx 5^129 xx 7^21 c = 3^1...

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  9. Calculate no. of factors of 100.

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  10. The sum of all the factors of 50 is

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  11. The number of factors of 84 is

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  12. Difference of (smallest common multiple of 18, 20, 30) and (smallest c...

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  13. (Smallest common multiple of 18, 24, 48) xx (Highest common factor of ...

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  14. (Smallest common multiple of 25, 40 and 60) xx (Smallest common multip...

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  15. (Highest common factor of 18, 24 and 36) / (Highest common factor of 1...

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  16. (Smallest common multiple of 36, 60 and 72) / (Biggest common factor o...

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  17. Find the LCM of 2/3 , 3/5 , 4/7 and 9/(13)

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  18. There are three street lights which get on for one second after 30 S, ...

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  19. Find the least number which when divided by 12, 16, 24 and 36 leave...

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  20. A gardener wants to plant trees in a garden. If the number of trees in...

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