Q.1 Which of the following are not twin primes?
(a) 3, 5
(b) 11,13
(c) 5,7
(d) 17,23
Q.2 If the HCF of two numbers is 16 and their product is 3072 then their LCM is:
(a) 182
(b) 192
(c) 12
(d) None of these
Q.3 Choose the incorrect option:
(a) -8 < 8
(b) 0 < - 12
(c) -15 < - 5
(d) -386 < 308
Q.4 On a particular day the temperature of Delhi at 10.00 am was 13° C but by the midnight, it fell down to 6° C. The temperature of Mumbai at 10 am the same day was 18° C but fell down to 10° C by mid night. Which fall is greater?
(a) Delhi
(b) both are same
(c) Mumbai
(d) None of the above
Q.5 The value of 0.008 × 0.01 × 0.072 ÷ (0.12 × 0.0004) is-
(a) 1.2
(b) 0.12
(c) 0.012
(d) 1.02
Q.6 Determine whether the following sequence has a common difference. Find the common difference.
1, 4, 7, 10, 13, 16, 19
(a) 3
(b) 19
(c) 7
(d) 1
Q.7 What is the largest 5-digit number with distinct digit?
(a) 99999
(b) 90009
(c) 98765
(d) 98009
Q.8 Rearrange the digits 10075302 to get the smallest and the largest numbers?
(a) 00012357,73521000
(b) 10002357,75321000
(c) 20001357,72351000
(d) 12357000,70005321
Q.9 Divya bought 8 dozen apples. Out of these 8 were rotten. The ratio of rotten apples to the total number of apples is _______________ .
(a) 1:2
(b) 8:8
(c) 1 : 12
(d) 2:6
Instruction: Rajeev has a square plot of side 300 m.
Q.10 Find the cost of leveling it, if the rate of leveling is ₹ 1.32 per square meter.
(a) ₹ 118800
(b) ₹ 90000
(c) ₹ 118008
(d) None of above
PLS ANSWER IT WITH FULL EXPLAINATION OTHERWWISE I WILL REPORT
Answers
Answer:
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Step-by-step explanation:
Q.1 Which of the following are not twin primes?
answer : Pairs of prime numbers that differ by 2 are called twin primes. The difference between 17 and 23 is 6. Hence, 17 and 23 are not twin primes.
Q.2 If the HCF of two numbers is 16 and their product is 3072 then their LCM is:
answer:
Q.3 Choose the incorrect option:
answer:(b) 0 < - 12.
Q.4 On a particular day the temperature of Delhi at 10.00 am was 13° C but by the midnight, it fell down to 6° C. The temperature of Mumbai at 10 am the same day was 18° C but fell down to 10° C by mid night. Which fall is greater?
answer : fall in temperature is the difference between the given temperature
Delhi = 13-6 =7°C
Mumbai = 18 - 10 = 8°C
(c) Mumbai
Q.5 The value of 0.008 × 0.01 × 0.072 ÷ (0.12 × 0.0004) is-
= 0.008 × 0.01 ×0.0720.000048
=0.00000576= 0.12
Q.6 Determine whether the following sequence has a common difference. Find the common difference.
1, 4, 7, 10, 13, 16, 19
answer : Sequence is 4,7,10,13,16,...
a1=4,a2=7,a3=10,...
If it is Arithmetic sequence, a2−a1=a3−a2=a4−a3 & so on
In the given sum,
a2−a1=7−4=3
a3−a2=10−7=3
a4−a3=13−10=3
Since the difference between the successive terms is same and
hence common difference d=3
Q.7 What is the largest 5-digit number with distinct digit?
answer: I don't no sorry
Q.8 Rearrange the digits 10075302 to get the smallest and the largest numbers?
answer:
largest numbers = 753210000
smallest number = 10002357
Q.9 Divya bought 8 dozen apples. Out of these 8 were rotten. The ratio of rotten apples to the total number of apples is _______________ .
answer : (c) 1 : 12
Q.10 Find the cost of leveling it, if the rate of leveling is ₹ 1.32 per square meter.
answer : (b) ₹ 90000