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81) Which of the following has the shortest wavelength?

A) Visible rays
B) Gamma rays
C) Infrared rays
D) X-rays

82) Alok ranked 19th from the top and 38th from the bottom in a class. How many students are there in the class?

A) 57
B) 56
C) 46
D) 55

83) ________is NOT a tributary of the river Ganga.

A) Sutlej
B) Kosi
C) Gandak
D) Son

84) In a certain code language,
‘get ready now’ is coded as ‘li ah tc’,
‘ready for vacation’ is coded as ‘cs li pa’,
‘travel for work now’ is coded as ‘pa vj ah rb’.
(Note: All codes are two letter codes only)
What is the code for “travel” in the given code language?

A) ah
B) Either ‘pa’ or ‘cs’
C) pa
D) Either ‘vj’ or ‘rb’

85) Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
All pharmacists are statisticians.
Some statisticians are mathematicians.
Conclusions:
I.All pharmacists are mathematicians.
II.Some pharmacists are mathematicians.
III.Some mathematicians are statisticians.
IV.Some statisticians are pharmacists.

A) Both conclusions IV and I follow.
B) Both conclusions I and II follow.
C) Both conclusions II and III follow.
D) Both conclusions III and IV follow.