Mathematics mcqs

the perimeter of a semi circle is 144 cm then the radius is---------?

the perimeter of a rhombus is 68 cm and one of its diagonals is 16 cm. find its area?

the perimeter of a rectangle is 60m. if it’s length is twice its breadth then its area is----------?

the perimeter of a rectangle and square are 160m each. the area of the rectangle is less than that it’s square by 100cm meters.

the perimeter of a floor of a room is 18m.what is the area of four walls of the room if it; a height is 3m?

the percentage profit earned by selling an article for rs. 1920 is equal to the percentage loss incurred by selling the same article for rs. 1280.

the parameter of a square is equal to the perimeter of a rectangle of length 16 cm and breadth 14 cm.

the parameter of a square is double the perimeter of a rectanglthe area of the rectangle is 480 sq cm. find the area of the square.

the owner of a furniture shop charges his customer 24% more than the cost pricif a customer paid rs.

the number which exceeds 16% of it by 42 is--------?

the number of solid spheres each of diameter 6 cm, that could be moulded to form a solid metal cylinder of height 45 cm and diameter 4 cm is?

the number of sequences in which 7 players can throw a ball, so that the youngest player may not be the last is -.

the number of seats available for biology and computer science in a school is in the ratio 5:8. they are to be increased by 30% and 25% .

the number of rounds that a wheel of diameter 7/11 m will make in going 4 km is:---------?

the number of permutations of the letters of the word ‘mesmerise’ is-----------?

the number of new words that can be formed by rearranging the letters of the word ‘alive’ is----------?

the number of arrangements that can be made with the letters of the word meadows so that the vowels occupy the even places?

the number obtained by interchanging the two digits of a two-digit number is less than the original number by 45.

the monthly incomes of a and b are in the ratio 5 : 2. b’s monthly income is 12% more than c’s monthly incomif c’s monthly income is rs.

the mean of 50 observations was 36. it was found later that an observation 48 was wrongly taken as 23. the corrected new mean is-----------?

the mean marks of 30 students in a class is 58.5. later on it was found that 75 was wrongly recorded as 57. find the correct them.

the marked price of a watch was rs. 720. a man bought the same for rs. 550.80, after getting two successive discounts, the first 10%.

the marked price is 10% higher than the cost prica discount of 10% is given on the marked price, in this kind of sale the seller

the list price of an article is rs.65. a customer pays rs.56.16 for it. he was given two successive discounts, one of them being 10%.

the length of the wire of 0.2mm radius that can be drawn after melting a solid copper sphere of diameter 18cm?