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Which of the following statement(s) is/are TRUE?
Which of the following statement(s) is/are TRUE?
I. The total number of positive factors of 72 is 12.
II. The sum of first 20 odd numbers is 400.
III. Largest two digit prime number is 97.
Answer & Solution
Correct Answer:
Option
D
I. N = 72 = 23 × 32
Total factors = (3 + 1)(2 + 1) = 4 × 3 = 12
True
II. Sum of n odd number = n2
Sum of 20 odd number = 202 = 400
True
III. Largest 2 digit prime number is 97
True
All are true
Total factors = (3 + 1)(2 + 1) = 4 × 3 = 12
True
II. Sum of n odd number = n2
Sum of 20 odd number = 202 = 400
True
III. Largest 2 digit prime number is 97
True
All are true
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