The ratio between the length and the perimeter of a rectangular plot is 1 : 3. What is the ratio between the length and breadth of the plot?
2:1
3:2
Data inadequate
1:2
If a, b and c are three natural numbers in ascending order, then
c2 - a2 = b2
c2 - a2 < b2
c2 + b2 = a2
c2 - a2 > b
'Buy three, get one free.' What is the percentage of discount being offered here?
25
20
28.56
33.33
A cyclist at 'C' is cycling towards 'B'. How far will he have to cycle from C before he is equidistant from both A and B?
3 km
6 km
5 km
4 km
Given linear equations, I, II and III, a learner is not able to solve III algebraically. The most likely area of difficulty is that the learner has not understood
that two equations can be solved by method of substitution
the method of solving equations using graphs
that both the equations in III can be altered by multiplying with suitable numbers
that two equations can be added or subtracted to solve then
C.
that both the equations in III can be altered by multiplying with suitable numbers
Equations 1 and 2 are easier for the child to solve as the two have one of the variables which have the same value but the equation 3 has different values of variables. The child when not be able to solve the third indicates that he/she is having a difficulty in the idea that the two equations can be solved by putting as one of the values of variable equal, which can be done by multiplying the variable by a number to make one of the variables equal.
When doing exponents, the work observed in a learner's notebook was as follows
43 x 42 = 45 , 64 x 64 = 68 , 73 x 37 = 2110
The learner has not understood how to
add exponents and multiply
multiply numbers with same base
multiply numbers with different bases
add exponents
A square sheet ABCD, when rotated on its diagonal AC as its axis of rotation, sweeps a
spindle
cylinder
trapezium
cone