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Sequences and Series | Arithmetic Progressions

if a, b, c are in AP and GP then 
If a, b, c, d, e, f are in A.P., then f – c is equal to:
In an arithmetic progression, sum of terms equidistant from the beginning and the end is equal to the:
What is the fourth term of an AP of n terms whose sum is n(n + 1)?
Let p be the mean of m observations and q be the mean of n observations, where p ≤ q. If the combined mean of (m + n) observations is c, then which one of the following is correct?
In a school prayer assembly, there are 23 students in the first row, 21 in the second, 19 in the third, and so on. There are 5 students in the last row. How many rows are there in the assembly?
How many two-digit numbers are divisible by 4?
What will be the arithmetic mean of the first 567 natural numbers?
What is the mean of first 29 natural numbers?
If q time the pth term of an AP is p times the qth term, then what is the (p + q) th term equal to
If the numbers n - 3, 4n - 2, 5n + 1 are in AP, what is the value of n?
Which of the following form an AP ?
If x2, x, -8 are in AP, then which one of the following is correct?
Let a, b, c be in AP and k ≠ 0 be a real number. Which of the following are correct? 1. ka, kb, kc are in AP 2. k - a, k - b, k - c are in AP 3. \(\frac{a}{k},\frac{b}{k},\frac{c}{k}\) are in AP Select the correct answer using the code given below:
Which of the following disciplines studies human populations mostly with respect to their size, their structure and their development?
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