10ii Arithmetic-2

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If the common difference of an AP is 5, then what is a₁₈ – a₁₃ ?

• 5

• 15

• 25

• 10

Choose the correct answer from the given four options: In an AP if a = –7.2, d = 3.6, a_n = 7.2, then n

• 2

• 3

• 4

• 5

The sum of first 'n' terms of an AP is (3n²+ 6n). The common difference of the AP is ______

• 6

• 9

• 15

• -3

The (n – 1)th term of an A.P. is given by 7,12,17, 22,… is

• 5n+2

• 5n+3

• 5n-2

• 5n-3

• p

• -p

• -1

• 1

If the sum of first 6 terms of an A.P. is 36 and that of the first 16 terms is 256, then the sum of first 10 terms of the A.P. is :

• 100

• 200

• 95

• 220

If (x+1) , 3x and (4x+2) are first three terms of an AP, then the value of x is :

• 3

• 4

• 1

• 2

43 is one of the term of the AP..3, 5, 7, ....determine which term is it

• 19
• 20
• 21
• 22