Which pair of ratios are equal? And why?
`(2)/(3), (4)/(6)`

Which pair of ratios are equal? And why? (8)/(4),(2)/(1)

Which pair of ratios are equal? And why? (4)/(5), (12)/(20)

Compare the pair of the ratios : (9.2)/(5.1),(3.4)/(7)

Which of the two compounds are more stable and why . K_(4)[Fe(CN)_(6),K_(3)[Fe(CN)_(6)] ?

Compare the ratios (5:6) and (3:4).

Which pair of numbers has least and maximum frequency in the given sequence ? "9 3 5 7 2 6 3 8 9 4 3 5 3 6 4 5 3 7 4 2 8 3 7 6 5 7 2 3 8 6 "

In the following number series how many 4's are there which are immediately preceded by a pair of numbers whose product is more than the product of the pair of numbers immediately following 4 ? 7 3 4 2 3 4 3 2 2 4 4 6 8 9 4 7 3 4 2 4 6 4 5 4 3 2 4 4 5 2 1) 4 2) 5 3) 6 4) 2 5) None of these

Find the angle between the following pair of lines whose direction ratios are given 1,2,3 and 2,-4,4