Test Index

CTET Paper II (Mathematics and Science) Dec 2018 Solved Paper

© examsnet.com

Question : 44 of 150

Marks: +1, -0

Given

\frac{\begin{matrix}7y \\ \times 6\end{matrix}}{yyy}

Then the value of y is—

8
6
4
2

Solution:

Concept:

A two-digit number like

7y

means

70 + y

. A three-digit number like

yyy

means

111y

.

Explanation:

Write the given equation:

(7y) \times 6 = yyy

.

Replace

7y

with

70 + y

and

yyy

with

111y

.

So,

(70 + y) \times 6 = 111y

.

Multiply:

420 + 6y = 111y

.

Subtract

6y

from both sides:

420 = 105y

.

Divide by

105

:

y = 4

.

Alternatively, test the options: put

y = 4

, then

74 \times 6 = 444

, which matches

yyy = 444

.

Answer:

Option C: 4

© examsnet.com

Go to Question:

Prev Question

Next Question