If 5 9 13 N Terms 7 9 11 12 Terms 5 12 Then N Equals
If (5+9+13+….n terms)/(7+9+11+..12 terms) = 5/12, then n equals (1) 5 (2) 6 (3) 9 (4) 12 Solution: Let S1... View Article
If (5+9+13+….n terms)/(7+9+11+..12 terms) = 5/12, then n equals (1) 5 (2) 6 (3) 9 (4) 12 Solution: Let S1... View Article
If the sum of first n terms of an AP is cn2, then the sum of squares of these n... View Article
An AP consists of 23 terms. If the sum of the three terms in the middle is 141 and the... View Article
The sum of all two-digit natural numbers which leave a remainder 5 when they are divided by 7 is equal... View Article
The arithmetic mean of 7 consecutive integers starting with a is m. Then, the arithmetic mean of 11 consecutive integers... View Article
If the sum to first n terms of an AP 2, 4, 6, … is 240, then the value of... View Article
A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth... View Article
If S1, S2 and S3 are the sum of n, 2n and 3n terms respectively of an arithmetic progression, then... View Article
The first four terms of an AP are a, 9, 3a – b, 3a + b. The 2011 th term... View Article
If the numbers a, b, c, d and e are in the form of an AP with a = 1,... View Article
Let an be the nth term of an AP. If ∑r =1100 a2r = α and If ∑r =1100 a2r-1... View Article
Six numbers are in an AP such that their sum is 3. The first term is 4 times the third... View Article
If 100 times the 100th term of an AP with non-zero common difference equals to 50 times its 50th term,... View Article
If log10 2, log10(2x– 1) and log10(2x + 3) are in AP, then x is equal to (1) log2 5... View Article
In an arithmetic progression a1 , a2 , a3 ,…, sum (S) = a12 – a22+a32 – a42 + …... View Article
The Sun is the largest, most massive object in the Solar System by far. The diameter of the Sun is... View Article
Aluminum chloride (AlCl3) is a Lewis acid because the aluminum atom has an open valence shell. When aluminum chloride is... View Article
Current = voltage/resistance I = V/R Where V is voltage, measured in volt; I is current, measured in ampere; R... View Article
Deoxyribonucleic acid (DNA) is a nucleic acid that is made up of three components: a deoxyribose sugar, a phosphate, and... View Article
Fossils are most commonly found in sedimentary rock among the three major rocks. Unlike most igneous and metamorphic rocks, sedimentary... View Article