99 Percentile Qs Bank for JEE MainMathematicsBasics of Mathematics
If 2=a, 3=b, 7=c and 6^x=7^ x+4 then x is equal to
Options
- A4 b c+a-b
- B4 c a+b-c
- C4 c c-a-b
- D4 a a+b-c
Correct answer
B. 4 c a+b-c
Step-by-step solution
We have, array cc & 6^x=7^ x+4 & x 6=(x+4) 7 & x( 2+ 3)=x 7+4 7 & x( 2+ 3- 7)=4 7 & x= 4 7 2+ 3- 7 = 4 c a+b-c array