Insert the missing number.
2, 4, 12, 48, 240, (....)
Go on multiplying the given numbers by 2, 3, 4, 5, 6.
So, the correct next number is 1440.
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Find out the wrong number in the given sequence of numbers.
56, 72, 90, 110, 132, 150
The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.
So, 150 is wrong.
52, 51, 48, 43, 34, 27, 16
Subtract 1, 3, 5, 7, 9, 11 from successive numbers.
So, 34 is wrong.
1, 2, 6, 15, 31, 56, 91
1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92
Last number of given series must be 92 not 91.
Find the odd man out.
41, 43, 47, 53, 61, 71, 73, 81
Each of the numbers except 81 is a prime number.
2, 5, 10, 17, 26, 37, 50, 64
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
Find the odd man out?
396, 462, 572, 427, 671, 264.
Here the given series is 396, 462, 572, 427, 671, 264.
In all the terms, the middle digit is the sum of first and third digit except 427.
So the Odd number in the given series is 427.
In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?
Let the required number of days be x.
Less cows, More days (Indirect Proportion)
Less bags, Less days (Direct Proportion)
cows 1:40 :40:xbags 40:1 :40:x
1 x 40 x x = 40 x 1 x 40
=> x = 40.
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