Sequences and Series - Online Test
Q1.
For what value of b, will the roots of the equation cos x = b, when arranged in ascending order of their magnitudes, form an A.P?
Answer : Option D
Explaination / Solution:
Q2. pth term of an H.P. is qr and qth term is pr, then rth term of the H.P. is
Answer : Option C
Explaination / Solution:
Q3. The number of numbers between n and which are divisible by n is
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. If the numbers a, b, c are in A.P., b, c, d are in G.P. and c, d , e are in H.P., then a, c, e are in
Answer : Option D
Explaination / Solution:
Q5. If x, y, z are in A.P., then (x + 2y – z) (x + z – y) (z + 2y – x) is equal to
Answer : Option B
Explaination / Solution:
Q6. If a, b , c are in A.P. and also are in A. P., then
Answer : Option B
Explaination / Solution:
Q7. The sum of terms equidistant from the beginning and end in A.P. is equal to
Answer : Option D
Explaination / Solution:
Q8. Sum of first 5 terms of an A.P. is one fourth of the sum of next five terms. If the first term = 2, then the common difference of the A.P. is
Answer : Option D
Explaination / Solution:
Q9. The first, second and last terms of an A.P. are a, b and 2 a. The number of terms in the A.P. is
Answer : Option C
Explaination / Solution:
Q10. The sum of all the two-digit numbers is
Answer : Option C
Explaination / Solution:
