If the 8- digit number 485x074y is divisible by 72 and the 6-digit number 5z4678 is
divisible by 11, then what is the value of (2x + 3y – z) ?
a) 18 b) 15 c) 12 d) 20
A can do a certain work in the same time in which B and C together can do it. A and B
together can do it in 10 days and C alone in 15 days. B alone can do 662/3% of the same
work in
a) 36 days b) 45 days c) 30 days d) 40 days
A sum amounts to Rs. 3872 in 2 years and Rs. 4259.20 in 3 years at a certain rte percent
p.a, if the interest is compounded annually. What is the simple interest on the same
sum for 51/3 year at 6.75% p.a?
a) Rs. 1240 b) Rs. 1224 c) Rs. 1152 d) Rs. 1125
If 9+2 (3x – xy + x2) + y2 = 0, then what is the value of (3x2 – 2xy + 5y2)?
a) 45 b) 54 c) 60 d) 63
The average of 61 numbers is 54. The average of first 31 numbers is 506 and that of last
31 numbers is 60.4. If the 31st number is excluded, then what is the average of the
remaining numbers?
a) 53.55 b) 52.45 c) 51.65 d) 51.75
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