Question

the unit digit in the product of 163 × 87* × 239 be 1, then the digit that the place of * will be.

Answer 1

now if we take unit digits of these three numbers then we get 3 × 9 × *

now, 3 × 9 = 27

it means the product we will get in unit place is 7 × *

but 7 × * get unit place as 1

if we multiply 7 × 3 we get 21 and unit place as 1

hence, * could be replaced by 3.

hope you understand.

please mark my answer as BRAINLIEST

Answer 2

Answer:

3

Step-by-step explanation:

• If we multiple all digit's unit place then
• = 3 × * × 9

if we directly put any number that we want after putting this we can find the actuall ans

• 3 × 3 × 9 = 81
• we can find our answer also doing this.