In this sentence, an idiomatic expression or proverb is highlighted. Select the alternative which best describes its use in the sentence.
Harassed by repeated acts of injustice he decided to put his foot down.

In this question a disarranged sentence is given in which words or phrases are retrieved P, Q, R, S. You are to arrange these to form a meaning sentence.
Russia's test firing-
P: to US steps that have sparked an arms race
Q: of an intercontinental ballistic missile on
R: and undermined world security
S: Tuesday was in response

DIRECTIONS: In this question, select the related word/letters/number from the given alternatives.

$36:144:: 49:?$

DIRECTION: In this question, select the related word/letters/number from the given alternatives.

BDGJ: OQTW:: AFIM:?

DIRECTIONS: In the following question, four alternatives are given, out of which three are alike in a certain way while one is different. Choose the odd one. Find the wrong term in the letter-number series given below:

$\mathrm{G}4\mathrm{T}, \mathrm{J}10\mathrm{R}, \mathrm{M}20\mathrm{P}, \mathrm{P}43\mathrm{N}, \mathrm{S}90\mathrm{L}$

DIRECTIONS: In the following question, four alternatives are given, out of which three are alike in a certain way while one is different. Choose the odd one.

Find the missing character in the following figure.

DIRECTIONS: In the following question, which figure is different from the rest of the three?

Select the correct alternative from the given ones which will complete the figural series.
Question figures:

Answer figure: