Question

Plzzzzzzzzzz help me.... Plzzzz a quick answer plz​

Answer 1

the least value of x is 1 .

because if the sum of digits of a number is divisible by 9 then the number is also divisible by 9 .

the given number is 21x5

now ,

2+1+5=8

nearer multiple of 9 for 8 is 9 only

so ,

x+8=9

x=9-8=1

so ,

least value of x is 1 .

Answer 2

bro x =3n. where n is natural no

if u put x =3n in 21x5 you will get multiple of 9

I hope it is helpful to you