Direction (1-5) : In the following number series only one number is wrong. Find out the wrong number.
1. 1250, 1299, 1335, 1355, 1376, 1385, 1389
(1) 1355
(2) 1389
(3) 1250
(4) 1376
(5) 1335
2. 6840 , 3418, 1707, 851.5, 432.75, 209.875
(1) 3418
(2) 851.5
(3) 432.75
(4) 209.875
(5) 1707
3. 1340, 1333, 1319, 1300, 1270, 1235, 1193
(1) 1319
(2) 1270
(3)1333
(4) 1300
(5) 1193
4. 123, 248 , 498, 998,1990 ,3998 7998, 15998
(1) 248
(2) 998
(3) 3998
(4) 7998
(5) 1990
5. 32, 21, 15.5, 12.75,11.375, 10.75
(1) 11.375
(2) 15.5
(3) 21
(4) 10.75
(5) 12.75
6. In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
(1) 63
(2) 90
(3) 126
(4) 45
(5) 135
7. Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.
(1) 2 : 3
(2) 1 : 1
(3) 3 : 4
(4) 4 : 3
(5) 2 : 1
8. A, B and C jointly thought of engaging themselves in a business venture. It was agreed that A would invest Rs. 6500 for 6 months, B, Rs. 8400 for 5 months and C, Rs. 10,000 for 3 months. A wants to be the working member for which, he was to receive 5% of the profits. The profit earned was Rs. 7400. Calculate the share of B in the profit.
(1) Rs. 1900
(2) Rs. 2660
(3) Rs. 2800
(4) Rs. 2840
(5) Rs 2200
9. A jar full of whisky contains 40% alcohol. A part of this whisky is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26%. The quantity of whisky replaced is:
(1) 1/3
(2) 2/3
(3) 2/5
(4) 3/5
(5) 1/5
10. A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:
(1) 35.55 km/hr
(2) 36 km/hr
(3) 71.11 km/hr
(4) 71 km/hr
(5) 69.69km/hr
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