Directions(1-5): Find out the odd number from the following series.
- 135,156,198,263,345,450
198263156135345Option B
+21*1
+21*2
+21*3
+21*4
+21*5
261 should be in place of 263. - 121,94,158,68,249,-94
1211589468-94Option D
-3^3
+4^3
-5^3
+6^3
-7^3
33 should be in place of 68. - 25,26,42,91,191,361
36142269125Option A
+1^2
+4^2
+7^2
+10^2
+13^2
360 should be in place of 361. - 107,138,169,198,231,262
107169198138231Option C
+31
+31
+31
+31
+31
200 should be in place of 198. - 7,22,68,207,620,1880
76862020722Option C
+3*1
+3*2
+3*3
+3*4
+3*5
625 should be in place of 620. - A person borrowed Rs.16650 on simple interest at the rate of 7% per annum. Find the total amount paid by the person after 4 years.
Rs. 23050Rs. 21312Rs. 22520Rs. 22000Rs. 20202Option B
Total amount paid by the person
= (16650*7*4)/100 + 16650
= 4662 + 16650 = Rs. 21312 - A man has an average speed of 45 km/hr. While going from A to B and returns from B to A with an average speed of x km/hr. Find the value of x, if the average speed of the whole journey is 36 km/hr.
10 km/hr.40 km/hr.30 km/hr.20 km/hr.50 km/hr.Option C
36 = (2*45*x)/(45+x)
=> 36*(45+x) = 90x
=> x = 30 km/hr. - X and Y can complete a work together in 24/5 days and Y and Z together and X and Z together can complete the same work in 8 days and 4 days resp. In how many days can Z complete the work alone?
1014181216Option D
1/x+1/y = 5/24 —–(1)
1/y+1/z = 1/8 —–(2)
1/x+1/z = ¼ ——(3)
From three equations, we get
2*(1/x+1/y+1/z)=7/12
=> z = 12 days - The sum of the present ages of A,B and C is 114 years. The ratio of the present ages of B and C is 3:5 and A’s present age is 10 more than C’s present age. What is the present age of B?
2822262024Option E
(5x+10)+3x+5x = 114
=> 13x + 10 = 114
=> x = 8
Present age of B = 24 years - R and S can together complete a task in 180/7 days. If the number of days taken by R to complete the task alone is 60 days, then how many days would it take S to complete the task alone?
45 days40 days48 days30 days37 daysOption A
R’s one days’ of work =1/60
Now, 1/60+1/x = 7/180
=>x = 45 days
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