DU JAT 2020 Question Papers

What number should come next in the series?

1/2, 1/3, 1/8, 1/30, ?

a. 1/64

b. 1/48

c. 1/144

d. 1/72

Ans. c

Sol. 1/2 - 1/3 = 1/6

1/3 - 1/8 = 5/24

1/8 - 1/30 = 11/120

Hence, denominators of the differences are multiplied by 4, 5 and 6 and numeratos increasing by 4, 6 and 8. Hence the next difference should be 19/720.

So, the next number =  1/30 – 19/720 = 1/144

 For the series: 2, 4, 6, 10, __, 10, 12, 10, 14, 16 …, what number should be filled in the blank?

a. 6

b. 8

c. 12

d. 14

Ans. b

Sol. The series is a part 2, 4, 6, 8, 10, 12, 14, 16, 18,

10’s are inserted after every 3rd number to make 2, 4, 6, 10, 8, 10, 12, 10, 14, 16, 18, 10

 

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Choose the one that does not belong to the group.

a. 7 : 20

b. 4 : 12

c. 2 : 5

d. 9 : 26

Ans. b

Sol. 20 = 7 × 3 – 1, 5 = 2 × 3 – 1 ; 26 = 9 × 3 – 1  (use BODMAS)

 

10 men and 15 women together can complete a work in 6 days. It takes 100 days for one man alone to complete the same work. How many days will be required for one woman alone to complete the work?

a. 90

b. 225

c. 145

d. 150

Ans. b

Sol. If 1 man finishes the work in 100 days, then 100 men will finish the work in 1 day.

Similarly, 10 men and 15 women can finish the work in 6 days.

So, 60 men and 90 women can finish the work in 1 day.

Hence 60 men + 90 women = 100 men

Or 90 women = 40 men

Hence 225 women = 100 men

Hence 100 men or 225 women can finish the work in 1 day.

Hence, 1 women can finish the work in 225 days.

 

To download complete papers of DU JAT 2020. 

DUJAT 2020 BMS BFIA Question Paper Shift 2

DUJAT 2020 BMS BFIA Question Paper Shift 3

 

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