AIEEE Exam

If the letters of word SACHIN are arranged in all possible ways and these words are written out as in dictionary, then the word SACHIN appears at serial number
option
a) 601
b) 602
c) 603
d) 600

Read Solution (Total 1)

If the word started with the letter A then the remaining 5 positions can be filled in 5! Ways.

If it started with c then the remaining 5 positions can be filled in 5! Ways.Similarly if it started with H,I,N the remaining 5 positions can be filled in 5! Ways.

If it started with S then the remaining position can be filled with A,C,H,I,N in alphabetical order as on dictionary.

The required word SACHIN can be obtained after the 5X5!=600 Ways i.e. SACHIN is the 601th letter.
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If roots of the equation x^2 - bx + c = 0 be two consecutive integers, then b^2 - 4c equals
option
a) -2
b) 3
c) 2
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