Correct Answer – B
यहाँ दो एकान्तर श्रंखलाये है :
(i) `43-1=42`
`42-1=41`
`41-1=40`
(ii) `45+1=46`
`46+1=47`

Correct Answer – C
`1xx2+2=4`
`4xx3+3=15`
`15xx4+4=64`
`64xx5+4=325`

Correct Answer – A
`672-6=666`
`666-6=660`
`660-6=654`
`654-6=648`

Correct Answer – B
`35+15=50`
`50+13=63`
`63+19=82`
`82+17=99`
`99+23=122`
`15overset(+4)(to)19overset(+4)(to)23overset(+4)(to)13overset(+4)(to)17`

Correct Answer – A
`263+14=277`
`277+13=290`
`290+12=302`
`302+11=313`
`313+10=323`

Correct Answer – B
`23+11=43`
`11+34=45`
`34+45=79`
`45+79=124`

Correct Answer – C
`33+7=40`
`40+8=48`
`48+9=57`
`57+10=67`
`67+11=78

Correct Answer – B
`3xx2+1=7`
`7xx2+2=16`
`16xx2+3=35`
`35xx2+4=74`

Correct Answer – C
`19xx2=38`
`38xx3=114` ltbr `114xx2=228`
`228xx3=684`
`684xx2=1368`

Correct Answer – C
`4xx3+1=13`
` 13xx3+2=41`
`41xx3+3=126`
`126xx3+4=382`
`382xx3+5=1151`

Correct Answer – B
`84-42=42`
`42-14=28`
`28-7=21`
`21-4.2=16.8`

Correct Answer – B
`120-(1)^2=119`
`119-(2)^2=115`
`115-(3)^2=106`
`106-(4)^2=90`
`90-(5)^2=65`

Correct Answer – A
`(283-1)/3=282/3=94`
`(94-1)/3=93/3=31`
`(31-1)/3=30/3=10`
`(10-1)/3=9/3=3`

Correct Answer – D
`(1)^2=1`
`(3)^2=9`
`(5)^2=25`
`(11)^2=121`
`(19)^2=361`
`(29)^2=841`
`(41)^2=1681`
अब,
`1+2=3`
`3+2=5`
`5+6=11`
`11+8=19`
`19+10=29`
`29+12=41`

Correct Answer – C
`16+(1)=17`
`17+(2)^3=25`
`52+(4)^3=52`
`52+(4)^3=116`
`116+(5)^3=241`

Correct Answer – A
`5+8(2)^3=13`
`13+27(3)^3=40`
`40+64(4)^3=104`
`104+125(5)^3=229`

Correct Answer – C
`3xx3+1=10`
`10xx3+1=31`
`31xx3+1=94`
`94xx3+1=283`

Correct Answer – A
`13+24=37`
`24+37=61`
`37+61=98`
`61+98=159`

Correct Answer – A
`21+(2)^2=25`
`25+(3)^3=52`
`52+(4)^2=68`
`68+(5)^3=193`
`193+(6)^2=229`

Correct Answer – C
श्रंखला सतत सम संख्याओं के पूर्ण वर्ग पर आधिरित है:
`(2)^2=4`
`(3)^2=16`
`(6)^2=36`
`(8)^2=64`
`(10)^2=100`