Q2 of 50 Page 6

Which of the following perfect squares are squares of even numbers? 121, 225, 256, 1296, 6561

256 and 1296 are squares of even numbers because they are even numbers.
121, 225 and 6561 are not squares of even numbers because they are odd numbers.

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1 Which of the following numbers are perfect squares? 11, 12, 16, 32, 36 3 Which of the following numbers are perfect squares? 100, 1000, 330550, 12345600000 4 Write down the correct number in the box: [For every natural number n, we have
(n + 1)2 - n2 = (n + 1 - n)(n + 1 + n) = (n + 1) + n.]
(a) 232 - 222 = ________
(b) 1012 -1002 = _________
(c) 5512 - 5502 = __________ 5 Write down the correct number in each box:
(a) 652 = 6 x 7(100) + 52 = 4200 + 25 =_________
(b) 752 = 7 x 8(100) + 52 = 5600 + 25 =__________