Mental Maths Class 7 Number System

Asked by RAJANYA MONDAL · The Level field School

In a two digit number, the tens place is 2 more than the unit digit. If both the digits adds up to 6 and when 18 is subtracted the digits are reversed, find the two digit number.

Answer as guest — Start Free Practice Test to earn Practice PointsHow to earn pointsAsk a question+3Answer a question+1Someone answers yours+1Your Q gets upvoted+1Pioneer bonus (first 5)+51 point = ₹1 discount on purchases, ask questions & climb the leaderboard!
Show answer and explanation

Answer: A. 42

The answer is 42. In the number 42, the tens digit is 4 which is 2 more than the unit digit which is 2. If 18 is subtracted from 42 the result is 24 and the digits are reversed. Also, 42 satisfies the condition that the digits must add up to 6.

Answering after opening this box earns no Practice Points.

people 3 answered check_circle 100% got it right
70%