Answer:
he should consume less caffine and sleep more
Explanation:
it will let his brain rest and focus
hey if you want a faster answer post under math nxt time
1820 ways
Using combination formula
n = 16 r= 4
16С4 = 1820 ways
The answer is (CCD) Charge-coupled device or CMOS image sensor
Hope it helps;Pls mark as brainliest answer