In copying a second degree equation, the number without 'x' was written as 24 instead of '-24'. The answers found were 4 and 6 . What are the answers of the correct problem?

In copying a second degree equation the number without 'x' was written as '-30' instead of 30. The answers found were 15 and '-2'. What are the answers of the correct problem?

In writing the equation to construct a rectangle of specified perimeter and area, the perimeter,was wrongly written as 24 instead of 42.The length of a side was then computed as 10 metres.What is the area in the problem?What are the lengths of the sides of the rectangle in the correct problem?

What are the number x which satisfy the equation |x-2|+|x-6|=4 ?

We can split 216 as 216=6xx 6xx 6 . Can we say that the only factors of 216 are the 4 numbers 1,6,36,24 . What are the other factors of 216 ?

How many three digit numbers can be written using digits 4,6, and 9 without repeating the digits? i) What is the probability that the numbers are odd numbers? ii) What is the probability that the numbers are even numbers?

a) If 'C(-1, k)' is a point on the line passing through the point 'A(2,4)' and 'B(4,8)' which number is 'K' ? b) What is the relation between the 'x' coordinate and the y.coordinate of any point on this line?

When the teacher asked to write the electronic configuration and box diagram of two elements with atomic number 24 and 29 respectively a student wrote the answer as follows. Z = 24, 1s^2 2s^2 2p^6 3s^2 Sp^6 3d^6 Z = 29, 1s^2 2s^2 2p^6 3s^2 Sp^6 3d^6 4s^2 If there is any mistake in the answer, correct it.

Find the equation of the line joining (1,2) and (2,4), For points on this line with the consecutive natural numbers '3,4,5, '……...as the 'x' coordinates, what is the sequence of y coordinates?

Find the answer to each of the problem below and then write it in words and as multiplication of numbers. i) Nine litres of milk is equally shared by four kids. How much does each get? ii) What if it were shared by three?