Given that $3^x$=656. The value of $5^{x-5}$ is ...

(a) 81

(b) 125

(c) 225

(d) 1/125

1

Which one of the following statements is NOT correct in the ring $ R = \mathbb{Z}_4 \oplus \mathbb{Z}_6? $ 

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2

Let $Re(z)$ and $Im(z)$ be the real and imaginary parts of any complex number $z$, and $\arg(z)$ denotes the principal …

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1

What is the next term in the series 6, 20, 42, 72, 110, ... is(a) 156(b) 210(c) 110(d) 119

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2

Next term in the series zaa, yeb, xic, wod, vue, ...is(a) uaf(b) uef(c) teg(d) tag

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3

Age of a child is half of the age of father. Twenty years ago the age of father was 10 times the age of son. What is th…

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4

In a race of 1 Kilometer, athlete A beats athlete B by 50 meters, in another race of 500 meters, athlete B beats athlet…

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5

Persons A, B, and C can finish a work in 15, 10, and 12 days respectively. Person B and person C start the work togethe…

Topic: DU MCA 2021