Search
.Management Sciences
A. 1
B. 2
C. 3
D. 4
E. None of these
Explanation:
Let the two-digit number be 10a + b
a = b + 2 — (1)
10a + b = 7(a + b) => a = 2b
Substituting a = 2b in equation (1), we get
2b = b + 2 => b = 2
Hence the units digit is: 2.
Related Mcqs:
- Solve the equation for x : 6x – 27 + 3x = 4 + 9 – x
- A. 4 B. 5 C. 6 D. -4 E. None of these...
- The cost of 2 chairs and 3 tables is Rs.1300. The cost of 3 chairs and 2 tables is Rs.1200. The cost of each table is more than that of each chair by__________?
- A. Rs.70 B. Rs.75 C. Rs.50 D. Rs.60 E. None of these...
- The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 3/5. Find the fraction?
- A. 2/3 B. 3/5 C. 4/7 D. 5/9 E. None of these...
- P, Q and R have Rs.6000 among themselves. R has two-thirds of the total amount with P and Q. Find the amount with R?
- A. Rs.3000 B. Rs.3600 C. Rs.2400 D. Rs.4000 E. None of these...
Recent Comments