A. 24
B. 12
C. 48
D. 36
Answer : Option A
Explanation :
A. 2.24
B. 1.24
C. 1.34
D. 2.34
Answer : Option D
Explanation :
3. If , then what will be the value of
A. 21.66
B. 13.41
C. 22.35
D. 44.7
Answer : Option D
Explanation :
4. The cube root of 0.000729 is
A. 0.09
B. 0.9
C. 0.21
D. 0.11
Answer : Option A
Explanation :
5. What is the least perfect square which is divisible by each of 21, 36 and 66?
A. 213444
B. 214434
C. 214344
D. 231444
Answer : Option A
Explanation :
LCM of 21, 36, 66 = 2772
ie, all multiples of 2772 are divisible by 21, 36 and 66
Prime factorization of 2772 is,
2772 = 2 × 2 × 3 × 3 × 7 × 11
ie, to make it a perfect square, we have to multiply it by 7 and 11
Hence, required number = 2772 × 7 × 11 = 213444
197 videos|151 docs|200 tests
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1. What is the formula to calculate the square root of a number? | ![]() |
2. How can I find the cube root of a number? | ![]() |
3. Can the square root of a negative number be determined? | ![]() |
4. What is the difference between square root and cube root? | ![]() |
5. How can I simplify expressions involving square roots and cube roots? | ![]() |
197 videos|151 docs|200 tests
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