3,7,19,55,163,?

Answers were Sorted based on User's Feedback



3,7,19,55,163,?..

Answer / g.deepa

Ans: 487
3+4=7+12=19+36=55+108=163+324=487.
12=(4*3),36=(12*3),108=(36*3),324=(108*3).

Is This Answer Correct ?    101 Yes 12 No

3,7,19,55,163,?..

Answer / sanjeet kumar jha

487

Is This Answer Correct ?    66 Yes 9 No

3,7,19,55,163,?..

Answer / heyyrashmi

Ans:=487
3
7=3+4
19=7+4*3
55=19+12*3
163=55+36*3
487=163+108*3

Is This Answer Correct ?    55 Yes 7 No

3,7,19,55,163,?..

Answer / abhishek mittal

starting with 7
7=(3*3)-2
19=(7*3)-2
55=(19*3)-2
163=(55*3)-2
therefore using this sequence next no will be (163*3)-2
i.e 487

Answer=487

Is This Answer Correct ?    30 Yes 5 No

3,7,19,55,163,?..

Answer / kumar

487

3*2= 6 +1 =7
3*6= 18 +1 =19
3*18=54 +1 =55
3*54=162 +1 =163
3*162=486 +1 =487

Is This Answer Correct ?    17 Yes 2 No

3,7,19,55,163,?..

Answer / jp srivsatava

3*3-2=7
7*3-2=19
19*3-2=55
55*3-2=163
163*3-2=487

Is This Answer Correct ?    17 Yes 4 No

3,7,19,55,163,?..

Answer / vishal pitaliya

3*3=9-2 =7
7*3=21-2 =19
19*3=57-2 =55
55*3=165-2 =163
163*3=489-2=487

so final answer is 487

Is This Answer Correct ?    17 Yes 4 No

3,7,19,55,163,?..

Answer / sonia

487

Is This Answer Correct ?    13 Yes 3 No

3,7,19,55,163,?..

Answer / abhishek ranjan shahi

487

Is This Answer Correct ?    13 Yes 5 No

3,7,19,55,163,?..

Answer / sravan kumar

487

Is This Answer Correct ?    11 Yes 4 No

Post New Answer

More General Aptitude Interview Questions

If the product of three consecutive int is 210,then sum of the two smaller ints is:

0 Answers   Verifone,


if a and b are mixed in 3:5 ration and b,c are mixed in 8:5 ration if the final mixture is 35 litres, find the amount of b in the final mixture

4 Answers   TCS,


Wat is the next letter OTTFFSS_?

4 Answers  


There are 1, 40, 00, 000 pencils of lengths ranging from 3 to 6 inches and are put up straight. The average length of 80% of pencils is 5 inches. Calculate the total length spanned by the pencils.

0 Answers   CGI,


Find the next series number 0, 6, 24, 120, 210, ---, ----

0 Answers   Citicorp,






If 5+3+2=151012, 5+4+5=202504, 7+2+5=143542 then 8+6+2= ?

21 Answers   DRDO, Facebook, Infosys, intract-crm, Mavensoft, Wipro,


The dimensions of a certain machine are 48" X 30" X 52". If the size of the machine is increased proportionately until the sum of its dimensions equals 156", what will be the increase in the shortest side?

5 Answers   Cap Gemini, HCL, IBM, TCS,


Convert the following infix expression to post fix notation ((a+2)*(b+4)) -1 (Similar types can be asked)

1 Answers  


In a group of 15 students,7 of them have studied Marathi, 8 of them have studied History, and 3 have not studied either. How many students studied both Marathi and History?

0 Answers   3i Infotech,


A shopkeeper bought a watch for Rs.400 and sold it for Rs.500.What is his profit percentage?

0 Answers   Accenture,


A robber steals half the total no of pastry plus 1/2 tray from a pastry shop. A second robber steals half the remaining no of pastry plus 1/2 tray and so on. After the 5th thief has stolen there are no more pastry left in the pastry shop. What was the total no of pastry did the pastry shop have at the beginning.

0 Answers   Cap Gemini,


Hello, I am sitting my aptitude test for Paramedic in QLD. I need some test questions similar to Livingstones Tests..please help im very, very nervous. Thanks ....depoultr@bigpond.net.au

1 Answers   Siyaram,


Categories