If CB is also a valid word, then the number of constructible words in the collection in question 89 is
5
4
3
2
Correct Answer : B
Which one of the following cannot be the ratio of angles in a right-angled triangle
Which pair of numbers comes next 9 11 33 13 15 33 17?
Look at this series: 15, __, 27, 27, 39, 39,...What number should fill the blank?