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A bag contains 5 red and 3 blue balls. If two balls are drawn, what is the probability that one is red and one is blue?

A15/28

B1/2

C1/4

D5/8

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The diagonal of a square is 10 cm. Find its area.

A50 cm²

B60 cm²

C75 cm²

D100 cm²

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If x + y = 10 and xy = 21, find the value of x^3 + y^3.

A350

B370

C400

D430

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A can do a work in 10 days and B in 15 days. They work together for 3 days and then A leaves. How long will B take to finish the rest?

A5 days

B7.5 days

C8.5 days

D10 days

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A shopkeeper sells an item at 10% gain. If he had bought it at 10% less and sold it for Rs. 2 less, he would have gained 16 2/3%. Find the cost price.

ARs. 100

BRs. 120

CRs. 150

DRs. 200

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Simple interest on a sum for 3 years at 5% per annum is Rs. 1,200. What is the compound interest on the same sum for 2 years at the same rate?

ARs. 820

BRs. 840

CRs. 860

DRs. 880

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The average of 5 consecutive even numbers is 20. Find the largest number.

A22

B24

C26

D28

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The LCM of two numbers is 48 and the ratio of the numbers is 2:3. Find the sum of the numbers.

A20

B30

C40

D50

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A train 150m long travels at 54 km/h. How long will it take to cross a pole?

A8 seconds

B10 seconds

C12 seconds

D15 seconds

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Box has 3 black, 7 white. Prob of black?

A0.3

B0.7

C3

D7

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