exam Maths Puzzle Numerical Ability

Q1. In how many ways 5 girls & 5 boys can be arranged if at least 3 girls sit together?

Q2. In how many ways 7 girls & 5 boys can be arranged if at least 2 girls sit together?

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exam Other Question

Put x = 0 you will get y = 1 . So you have a point (0,1). Put x = 1 then y = 3,then (1,3) is another pt. Continue like this u will get many set of points . Plot them as usual.Use (-)ve nos. also for x. Bob the bricklayer can complete a stone wall in 8 hours. Butch the bricklayer can finish the wall in 5 hours. If the two work together on the wall, how long will it take them to complete it?