Question

If the units digit of a number is 0, then tens digit of square of that number is
b) 0
c)2
d) 3​

Answer 1

Answer:

b) 0

is your right answer

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

If the units digit of a number is 0, then tens digit of square of that number is

a) 1

b) 0

c) 2

d) 3

EVALUATION

• If the last of a number is 0 then last two digits of its square number is 00

• If the last of a number is 1 or 9 then last digit of its square number is 1

• If the last of a number is 2 or 8 then last digit of its square number is 4

• If the last of a number is 3 or 7 then last digit of its square number is 9

• If the last of a number is 4 or 6 then last digit of its square number is 6

• If the last of a number is 5 then last digit of its square number is 5

Now the units digit of a number is 0

So the last two digit of square of that number is 00

Hence tens digit of square of that number is 0

FINAL ANSWER

Hence the correct option is b) 0

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