Question

what will be the unit digit of ptoduct of square of first 9natural number?​

Answer 1

Step-by-step explanation:

First 9 natural number are 1, 2, 3, 4, 5, 6, 7, 8, and 9

Sum = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9

⇒ 45

Unit digit of sum of first 9 natural numbers is 5.

Answer 2

Answer:

the product of square of first 9 natural numbers is -- 1×4×9×16×25×36×49×64×81=