A learning system based on formalised teaching but with

How many 6s are there in the following number series which are preceded by 4 and followed by 8.

2 4 6 8 4 2 8 6 4 8 7 3 8 6 4 2 4 6 8 7 4 6 9 4

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

13, 38, 150, _____, 4478, 31341.

Select the number that can replace the question mark (?) in the following series. 17, 21, 30, 46, 71, ?

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

12 5 20

m 13 8

If ‘m’ is the resultant of the first row, what the resultant of the second row?

Select the number-pair that is different from the other three.

Read the directions carefully and answer the following question.

Select the option that is related to the third term in the same way as the second term is related to the first term.

17 : 361 : : 21 :______

If 3792 = 39 and 7242 = 22, then 2958 = ?