The ratio of the length to the breadth of a rectangle is 2 : 1. Its perimeter is 60 cm, find its area.
250sq cm
200 sq cm
300 sq cm
205 sq cm
Which two numbers when multiplied give
the product 24 ?
is a closed ended question as it has definite numbers of answers
suggests general problem solving strategy to the child so that he/she can answer correct
helps the child to think metacognitively
is an open ended question as it has more than one answer
If the number 23583 ab is completely divisible by 80, then the value of a - b is
2
3
4
0
A.
2
2 3 5 8 3 ab is divisible by 80,
so it should be divisible by both 8 and 10 (factors of 80). For 2 3 5 8 3 ab to be divisible by 10,
b = 0
Now, by divisibility rule of 8, 3ab,
i.e. 3a0 must be divisible by 8.
Only a= 2 makes it possible.
a - b = 2
A number when divided by 899 gives a remainder 63. If the same number is divided by 29, the remainder will be
3
5
7
9