In the given analogy, Compass is related to direction because it is used to detect the direction. Similarly, Hygrometer is used to measure the humidity.

In the given analogy, China is related to Beijing because Beijing is the capital of China. Similarly, Astana is the capital of Kazakhastan

In the given question, “STUDY” is the common word in two sentences so, the code for “STUDY” is “oz”, similarly “THE” is common in two sentences so the code for “THE” is ab. The code for “MATERIAL” is “gr”.

In the coding system, X$P@G%H shows that X is the brother of P, P is the father of G and G is the sister of H, so X is the paternal uncle of G and P.

The given series follows a pattern
2 X 5-5=5
5 X 5-5=20
20 X 5-5=95
95 X 5-5=470
470 X 5-5=2345

In the given series, the following pattern is followed:
8000 ÷ 1=8000
8000 ÷ 2=4000
4000 ÷ 3=1333.33
1333.33 ÷ 4=333.33

As per given series,
20+8=28
28-5=23
23+8=31
31-5=26
26+8=34

In the given series, the first term is multiplied by 1.25, second term is multiplied by 1, third term is multiplied by 0.75 and so on. So, the fourth term in the series is,

88 × 0.75 = 66

According to the given question, Amit is the son of Ravi maternal uncle daughter, means Amit is the nephew of Ravi. So, the Amit is also the nephew of Ravi’s sister.

According to the given condition,
(6&4) % 5 = ((6 × 4) + 6 + 4) − 5
= 24 + 10 − 5
= 34 − 5 = 29