Question

write the units digits of the squares of the following numbers 93 b 72 c 546 d 729 e 5430​

Answer 1

Answer:

Step-by-step explanation:

a) 93: the unit digit is 3 so the square of 3 gives 9 , so the square of 93 will give u 9 as the unit digit .

b) 72: the unit digit is 2 so the square of 2 gives 4 , so the square of 72 will give u 4 as the unit digit .

c) 546: the unit digit is 6 so the square of 6 gives 36 , so the square of 546 will give u 6 as the unit digit .

d) 729: the unit digit is 9 so the square of 9 gives 81 , so the square of 729 will give u 1 as the unit digit .

e) 5430: the unit digit is 0 so the square of 0 gives 0 , so the square of 5430 will give u 0 as the unit digit .

Answer 2

Step-by-step explanation:

• As the digit in the units place in 93 is 3, the digit in the units place in the square of 93 will be 3² = 9

• As the digit in the units place in 72 is 2, the digit in the units place in the square of 72 will be 2² = 4

• As the digit in the units place in 546 is 6, the digit in the units place in the square of 546 will be 6 (∵6² = 36)

• As the digit in the units place in 729 is 9, the digit in the units place in the square of 729 will be 1 (∵9² = 81)

• As the digit in the units place in 5430 is 0, the digit in the units place in the square of 5430 will be 0 (∵0² = 0)