Question

what will be the unit digit of product of square of first 9 natural number 1)0
2)1 3)6 4)4​

Answer 1

Answer:

1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 = ?

1 x 2 = 2

2 x 3 = 6

6 x 4 = 24

24 x 5 =120

120 x 6 =720

720 x 7 = 5040

5040 x 8 = 40320

40320 x 9= 362880

So the product of all natural numbers till 9 are 362880

And thus we can see that the digit at the units place is 0.

So the answer is 0

Step-by-step explanation: