CSIR NET 2023 Life Science Prev. Yr. Paper (06-June-2023) (Shift 2)

Question 1

Two fair cubical dice are thrown. What is the probability that at least one of them shows 4?

Accepted Answer

$\frac{11}{36}$

Answer

$\frac{1}{36}$

Answer

$\frac{1}{6}$

Answer

$\frac{1}{18}$

Question 2

Given that a &ne; b and a, b > 0, and $\rm \frac{a^{n+2}+b^{n+2}}{a^n+b^n}$ = ab then n =

Accepted Answer

-1

Answer

1

Answer

$\frac{1}{2}$

Answer

$\frac{-1}{2}$

Question 3

120 students wrote an exam with 4 questions. 100 solved the first question, 95 the second, 90 the third, and 80 the fourth. What is the smallest possible number of students that solved all four questions?

Accepted Answer

80

Answer

5

Answer

20

Answer

15

Question 4

Four identical incompressible spheres of radius 1 unit are stacked in a pyramidal form as shown in the figure. All the spheres touch each other. The height of the structure is

Accepted Answer

$2 + 2\sqrt{2/3} $

Answer

2 + &radic;2

Answer

2 + &radic;3

Answer

3

Question 5

Choose the option that will make the following statement correct:IF WE COUNT THE NUMBER OF APPEARANCES OF THE LETTER "N" IN THIS SENTENCE, THE RESULT WILL BE _________.

Accepted Answer

SEVEN

Answer

SIX

Answer

NINE

Answer

TEN

CSIR NET 2023 Life Science Prev. Yr. Paper (06-June-2023) (Shift 2)

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