The probabilities of solving a problem by three students A, B and C are  $$3\over 7$$, $$5\over 9$$ and $$1\over 5$$ respectively. The probability that problem will be solved is:

The price of $$ {4{1\over2}}$$ meter of cloth is Rs.$$ {60{3\over4}}$$. Find the cost per meter.

Direction: Study the following table carefully and answer the given questions. Table shows the of passed students in four schools and ratio between passed boys and girls among them. The ratio between failed boys and girls is reverse of passed ratio between them.

Find the approx average number of passed students in all the schools together.

Simplify $$ ({Sinθ\over{1+cosθ}}+{1+cosθ\over sinθ})({1\over (tanθ+cotθ)})$$

24 women take 14 days to complete a piece of work which can be completed by 14 men in 12 days. 18 men started working and after 5 days, 10 men left and 8 women joined them. How many days will it take them to complete the remaining work?

The radius of a cone is 20 cm and height is 21 cm, the total surface area of the cone is in square cm:

A person divided a certain sum between his three sons in the ratio 3:4: 5. Had he divided the sum in $${1\over 3}:{1\over 4}:{1\over 5}$$ the ratio: the son, who got the least share earlier, would have got ₹1,188 more. The sum (in) was:

Direction : What value should come in place question mark(?) in the following questions?

4 × 5² – 3² × 7 + 6²=?+24