B-01

1. Which sentence is correct?

d
d
d
d

2.

d
d
d
d

3. sdfghj

sdfgh
s
s
s

4. $x^2 + 5x + 6 = 0$

x^2
h
hh
x^2

5. $$frac{n!}{k!(n-k)!}$$

া
া
া
া

6. $$ {displaystyle frac{n!}{k!(n-k)!}} $$

g
g
g
g

7. (1+1)

sf
f
f
f

8. frac{partial }{partial x}

g
g
g
g

9. left(frac{a-1}{a}right)

v
v
v
v

10. √5Djahan5⁵

√2Djahan2²
g
g
g

11. ¹⁄₁₀₀₀

f
f
f
f