class 11

Math

Co-ordinate Geometry

Straight Lines

$L_{1}=x+3y−5=0,L_{2}=3x−ky−1=0,L_{3}=5x+2y−12=0$ are concurrent if k=

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a_abbb_ccccd_ddccc_bb_ba

Find the value of $_{′}?_{′}$ in the series: $12,17,15,?,18,23,21,....$

In each of the following question given below which of the five answer figures on the right should be sixth figure on the left if the sequence continues

A fibonacci series is:

cccbb - aa - cc - bbbaa -

If the $n_{th}$ term of a sequence is $100n+10$, then the sequence is

$m,2m,4m,...$The first term in the sequence above is $m$, and each term thereafter is equal to twice the previous term. If $m$ is an integer, which of the following could NOT be the sum of the first four terms of this sequence?

The decimal expansion of the rational number $2_{4}×5_{3}43 $ will terminate after how many places of decimal.