Untitled

 2 mark

| -0.25 mark |

 60 minutes

00:00:00

Question 1:

In how many ways can the letters of the word DELHI be arranged keeping the positions of vowels and consonants unchabnged?

Question 2:

What is the number of positive integer solutions of \( x+y+z=5 \)?

Question 3:

What is the number of rational terms in the expansion of \( \left(3^{\frac{1}{2}}+5^{\frac{1}{4}}\right)^{12} \) ?

Question 4:

If the sum of binomial coefficients in the expansion of \( (x+y)^{n} \) is 256, then the greatest binomial coefficient occurs in which one of the following terms?

Question 5:

If \( k<(\sqrt{2}+1)^{3}