SquaresandSquare Roots
1. A perfect square number can never have the digits ... at the units place.
2. Find
3. Find the value of (23) using column method.
4. Find the value
5. Write a Pythagorean triplet whose smaller member is 6.
6. What is the sum of first n odd natural numbers?
7. A number ending in an odd number of zeros is never a
8. If m, n, p are natural numbers such that
(m? + n') = p. then (m, n, p) is called
9. Express 49 as the sum of seven odd numbers.
10. Without adding, find the sum.
(1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17)
11. Find the value of
12. Write the unit digit of square of 799.
Answers
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1. 2,3,7,8....after this question i am unable to understand your questions