C-05-Q137mediumsingle_mcq

A two-digit number has digit sum $7$ . Reversing the digits gives a number $9$ more than the original. Original number is—

a $34$
b $43$
c $25$
d $52$

ব্যাখ্যা

Let the tens digit be $t$ and units $u$ with $t+u=7$ ; reversal exceeds the original by $9$ means $9u-9t=9$ , so $u-t=1$ . Solving gives $t=3,\ u=4$ , so the number is $34$ .

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Equations in One Variable — সব প্রশ্ন দেখুন (170টি) →

A two-digit number has digit sum 777. Reversing the digits gives a number 999 more than the original. Original number is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

A two-digit number has digit sum 777. Reversing the digits gives a number 999 more than the original. Original number is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

A two-digit number has digit sum $7$ . Reversing the digits gives a number $9$ more than the original. Original number is—

A two-digit number has digit sum $7$ . Reversing the digits gives a number $9$ more than the original. Original number is—