Q1. If the given interchanges are made in sign and numbers, which one of the four equations would be correct?
Interchanges – Signs – and x
– Numbers 3 and 6
A. 6 − 3 × 2 = 9
B. 6 × 3 − 4 = 15
C. 3 × 6 − 4 = 33
D. 3 − 6 × 8 = 10
Choose the most appropriate answer from the options given below:
A A
B B
C C
D D
Explanation
Answer: D
Explanation:
A. 6 − 3 × 2 = 9
After interchanges
3 × 6 − 2 = 9
This is incorrect as L.H.S = 17
B. 6 × 3 − 4 = 15
After interchanges
3 − 6 × 4 = 15
This is incorrect as L.H.S = – 21
C. 3 × 6 − 4 = 33
After interchanges
6 − 3 × 4 = 33
This is incorrect as L.H.S = 12
D. 3 − 6 × 8 = 10
After interchanges
6 × 3 − 8 = 10
This correct as L.H.S. = R.H.S. = 10
Leave a Reply