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Multiple Choice Question with Two or More Choices Correct
Which of the following waves can be polarised?
(a) Transverse waves on a string
(b) Sound waves in a gas
(c) Longitudinal waves in a spring
(d) Light waves

Chemistry

Increasing/Decreasing Characteristics

Increasing strength of hydrogen bonding (X ... H - X)

O, S, F, Cl, N

Mathematics

Passage Based Question
Passage I
A chess match between two grandmasters X and Y is won by whoever first wins a total of two games. X' s chances of winning, drawing or losing any particular game are a, b, c respectively. The games are independent and a + b + c = 1.
The probability that X wins the match is