A. 4920 cm2
B. 4727 cm2
C. 9856 cm2
D. 19712 cm2
A. 1
B. 2
C. 3
D. 4
Explanation:
Let the numbers be 13a and 13b.
Then, 13a * 13b = 2028 => ab = 12.
Now, co-primes with product 12 are (1, 12) and (3, 4).
So, the required numbers are (13 * 1, 13 * 12) and (13 * 3, 13 * 4).
Clearly, there are 2 such pairs.
A. Rs. 51.25
B. Rs. 52
C. Rs. 54.25
D. Rs. 60
A. Rs.70
B. Rs.75
C. Rs.50
D. Rs.60
E. None of these
Explanation:
2C + 3T = 1300 — (1)
3C + 3T = 1200 — (2)
Subtracting 2nd from 1st, we get
-C + T = 100 => T – C = 100
A. 6.06%
B. 6.07%
C. 6.08%
D. 6.09%
Explanation:
Amount of Rs. 100 for 1 year when compounded half-yearly = [100 * (1 + 3/100)2] = Rs. 106.09 Effective rate = (106.09 – 100) = 6.09%
A. 5
B. 8
C. 10
D. 15
Explanation:
Let S.P. of 12 toffees be Rs. x.
Then, 80:1 = 120:x or x = 120/180 = 3/2
For Rs. 3/2, toffees sold = 12.
For Re. 1, toffees sold = 12 * 2/3 = 8
A. 651
B. 361
C. 100
D. 95
Explanation:
³√216400 + √280 + √322
= 60 + 16.5 + 18 = 94.5 = 95