Find the missing number from the given figure?

ba_ba_bbaaa_bbb_ _aa 

cccbb_aa_cc_bbbaa_c 

If in a certain way, 3 + 4 = 25 and 7 + 24 = 625, then Find the value of 9 + 40 =?

A number in the given number series is incorrect. Find the wrong number.
120, 143, 168, 196, 224

a_cacbc_baca_ _b 

5 people participated in a race. Karthik finished the race just behind Prabhjot. Faraz completed the race just before the Lakshya. Anil completed the race just before Faraz. Anil came in third place. Which of the following finished second in the race?

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