# Q&Answers: Math/Chemistry/Physics Problems + Solutions

A coin is flipped twice.What is the probability that both flips result in heads given that first flip does?

Get AnswerA shopkeeper sold an book offering a discount of 5% and earned a profit of 33%.

Get AnswerA number exceeds by 15 from its 3/8 part.

Get AnswerA 300 m long train crosses a platform in 39 sec while it crosses a signal pole in 14 sec.

Get AnswerCircles X and Y are concentric.

Get AnswerFrom the beginning to the end of 2007, the price of a stock rose 20 percent.

Get AnswerHow many Kg of rice at Rs.6.60 per Kg. be mixed with 56Kg of rice at Rs.9.60 per Kg to get a mixture

Get AnswerOut of first 20 natural numbers, one number is selected at random.

Get AnswerA one-foot stick is marked in 1/2 and 1/4 portion.

Get AnswerFind a two digit number, given that the sum of the digits is 13 and the difference of the digits is 5.?

Get Answerjohn bought a computer for $2,000 and then paid a 5 percent sales tax, and Henry bought a computer for $1,800 and then paid a 12 percent sales tax.

Get AnswerIn how many ways can 5 boys and 2girls be arranged ata table if 2 girls are never together?

Get AnswerWhen working alone, painter W can paint a room in 2 hours, and working alone, painter X can paint the same room in h hours.

Get AnswerThe L.C.M. of 2 numbers is 54.

Get AnswerSet A contains all the even numbers between 22 and 70 inclusive.

Get AnswerRahul's Mathematics test had 75 problems, 10 arithmetic, 30 algebra, 35 geometry problems.

Get AnswerIf ABC is a quarter circle and a smaller circle is inscribed in it; if radius of quarter circle is 1.414units.

Calculate AnswerN is a positive integer.

Calculate AnswerTwo isosceles Triangles have equal vertical angles and their areas are in the ratio 25:49.

Calculate AnswerOn dividing a number by 7, we get 3 as quotient and 0 as remainder.

Calculate Answer