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Class 11
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Applied Mathematics
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Numerical Applications
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Medium Questions
Numerical Applications
Applied Mathematics
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JEE Mains
BITSAT
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Easy Qs
Med Qs
Hard Qs
>
State true or false.
A.M. of any
$n$
positive numbers
$a_{1},a_{2},a_{3},....,a_{n}$
is
$A$
then
$A=na_{1}+a_{2}+....+a_{n} $
A
True
B
False
Medium
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>
Say true or false.
The A.M. between
$(a−b)_{2}$
and
$(a+b)_{2}$
is
$a_{2}+b_{2}$
.
A
True
B
False
Medium
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>
$20$
persons are invited for a party, then the number of ways in which they and the host be seated at a round table is
A
20!
B
21!
C
22!
D
2.20!
Medium
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>
The number of ways in which 7 persons can be arranged around a circle is:
A
$360$
B
$720$
C
$5040$
D
$1440$
Medium
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>
A factory requires
$42$
machines to produce a given number of articles in
$63$
days. How many machines would be required to produce the same number of articles in
$54$
days?
A
$49$
machines
B
$32$
machines
C
$54$
machines
D
$31$
machines
Medium
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>
The mean of five numbers is
$30$
. If one number is excluded, their mean becomes
$28$
. The excluded number is:
A
$28$
B
$30$
C
$35$
D
$38$
Medium
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>
Ten pipes of the same type can fill up a tank in
$16$
minutes. If two pipes go out of order, how long will the remaining pipes take to fill the tank ?
A
$18$
mins
B
$20$
mins
C
$22$
mins
D
$24$
mins
Medium
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>
Two persons could fit new windows in a house in
$3$
days. One of the persons fell ill before the work started. How long days would the job take now?
A
$3$
B
$4$
C
$6$
D
$9$
Medium
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>
If
$5$
workers can build a fence in
$65$
days, how long would it take
$13$
workers to build the same fence?
A
$15$
days
B
$20$
days
C
$25$
days
D
$35$
days
Medium
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>
$3$
persons weave
$168$
shawls in
$14$
days, how many shawls will 8 people weave in
$5$
days?
A
$90$
B
$105$
C
$115$
D
$160$
Medium
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>