Find the least number by which 131712 should be divided to make it perfect cube. Find the perfect cube so obtained and it's cube root
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Step-by-step explanation:
Prime factorisation of 1372 gives us:
1372= 2²×7³, So 2 is the only number not in cube. Therefore, multipliyng it by 2 or dividing it by 2² will make it a perfect cube.
1372/2² = 2²×7³/2² = 7³ = 343
So, the correct answer is 2²=4, as given in the figure!
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