Question 2 The following groups of three numbers go together in a certain way.
Find the missing number.

19; 29; 46/32
25; 25; 42/38
18; 28; 45/31
26; 17; 34/ 39
28; 20; ?

A: 37/41
B: 32/41
C: 30/48
D: 37/36
E: 37/46

Step-by-step explanation:

We can observe that:

Therefore the missing pair will be:

Correct choice is A

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)