Which of the following is a perfect square number?
Which of the following would end with digit 1?
Without adding, find the sum. 1 + 3 + 5 + 7 + 9
Find the smallest whole number by which 1008 should be multiplied to get a perfect square number .
The smallest whole number is 7, by which 1008 should be multiplied so as to get a perfect square.
Now 1008×7= 7056
=2×2×2×2×3×3×7×7
So, the square root will be =2×2×3×7 = 84
When a square number ends in _______, the number whose square it is, will have either 4 or 6 in unit’s place.
Sum of squares of two numbers is 145. If square root of one number is 3, find the other number.
Find the perfect square numbers between 30 and 40.
All square numbers end with __________ at unit’s place.
The numbers ending with 0 gives 0,numbers ending with 1,9 gives 1, numbers ending with 2,8 gives 4, numbers ending with 3,7 gives 9, numbers ending with 5 gives 5 and numbers ending with 4,6 gives 6. Hence we get only 0,1,4,5,6,9 at the unit's place.
Without doing any calculation, find the numbers which are surely perfect squares.
How many numbers lie between square of 12 and 13
12^{2} = 12*12 = 144
13^{2} = 13*13 = 169
Now numbers are between144 and 169 are:
145, 146, 147,.............168
Total number = 24
So total numbers lies between 144 and 169 is 24
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