2.28

NILAI = c(100,95,70,80,25,60,80,60,55,90)
NILAI
##  [1] 100  95  70  80  25  60  80  60  55  90
NILAI[NILAI > 60 & NILAI < 80]
## [1] 70

2.30

NILAI = c(100,95,70,80,25,60,80,60,55,90)
NILAI
##  [1] 100  95  70  80  25  60  80  60  55  90
NILAI[NILAI > 80]
## [1] 100  95  90

2.32

NILAI = c(100,95,70,80,25,60,80,60,55,90)
NILAI
##  [1] 100  95  70  80  25  60  80  60  55  90
NILAI[NILAI > 80 | NILAI < 30]
## [1] 100  95  25  90

2.34

NILAI = c(100,95,70,80,25,60,80,60,55,90)
NILAI
##  [1] 100  95  70  80  25  60  80  60  55  90
NILAI = NILAI[NILAI < 75]
NILAI
## [1] 70 25 60 60 55