C-05-Q138mediumsingle_mcq

In question 137, with units digit $u$ and tens digit $t$ , the relation between digits is—

a $u - t = 1$
b $t - u = 1$
c $u + t = 9$
d $u = 2t$

ব্যাখ্যা

Reversed number minus original is $(10u+t)-(10t+u)=9u-9t=9$ , which simplifies directly to $u-t=1$ . This is the digit relation that, combined with the digit-sum condition, fixes the number.

এই অধ্যায়ের আরও প্রশ্ন

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

In question 137, with units digit $u$ and tens digit $t$ , the relation between digits is—

u - t = 1

t - u = 1

u + t = 9

u = 2t

ব্যাখ্যা

Reversed number minus original is $(10u+t)-(10t+u)=9u-9t=9$ , which simplifies directly to $u-t=1$ . This is the digit relation that, combined with the digit-sum condition, fixes the number.

In question 137, with units digit uuu and tens digit ttt, the relation between digits is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In question 137, with units digit uuu and tens digit ttt, the relation between digits is—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

In question 137, with units digit $u$ and tens digit $t$ , the relation between digits is—

In question 137, with units digit $u$ and tens digit $t$ , the relation between digits is—