MBA Exam

what is the remainder when 3^50 is divided by 91?plz explain euler key baad kya karna hai??

1) 3
2) 9
3) 27
4) 81

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MBA Other Question

rem when 90^91 by 13

1) 0
2) 7
3) 11
4) 12
A rectangular tank 25 cm long and 20 cm wide contains water to a depth of 5 cm. A
metal cube of side 8 cm is placed in the tank so that the face of the
cube rests on the bottom of the tank. How much water must be poured into
the tank so as to just cover the cube?

1) 1000
2) 847
3) 768
4) 988
5) 625