Arithmetic Progression

Find the sum of 20 terms of the AP 1,4,7,10, .....

If the first term of an AP is 2 and common difference is 4, then the sum of its 40 terms is

• 3200

• 1600

• 200

• 2800

Find the sum of 2+4+6+.....+200

• 108

• 10100

• 40703

• -8930

Find the sum of the following arithmetic prgression 50,46,42, .... to 10 terms

• 320

• 144

• 525

• 162

Find the sum of last ten terms of the AP 8,10,12,14, ....,126

• 1176

• 1234

• 1123

• 1170

Which terms of the AP 5,9,13,17,.... is 81 ?

• 18th

• 19th

• 20th

• 21th

Is the a,(2a+1),(3a+2),(4a+3),.... sequence an AP ?

• Yes

• No

Find the sum of the first 51 terms of the AP whose second term is 2 and fourth terms is 8

• 3774

• 3904

• 2424

• 2544

Find a,b and c if it is given that the numbers a,7,b,23,c are in AP

• a=-1,b=15 and c=30

• a=-1,b=15 and c=31

• a=-1,b=15 and c=32

• a=-1,b=15 and c=33

• 19

• 23

• 22

• 21