By what least number should we multiply 1008 to make it a perfect squa...
To find the least number by which we should multiply 1008 to make it a perfect square, we need to factorize 1008 and then identify the missing prime factors.
Factorizing 1008:
The prime factorization of 1008 can be found by dividing it by prime numbers starting from 2.
1008 ÷ 2 = 504
504 ÷ 2 = 252
252 ÷ 2 = 126
126 ÷ 2 = 63
63 ÷ 3 = 21
21 ÷ 3 = 7
Hence, the prime factorization of 1008 is 2 × 2 × 2 × 2 × 3 × 7.
Identifying the missing prime factors:
To make 1008 a perfect square, we need to have an even number of each prime factor.
From the factorization, we can see that we have four 2's, one 3, and one 7. To make the number of 2's even, we need to multiply 1008 by another 2.
So, the least number by which we should multiply 1008 to make it a perfect square is 2.
Conclusion:
To make 1008 a perfect square, we need to multiply it by 2. Therefore, the correct answer is option B) 2.