If 3/7>2/n>3/8 and n is a natural number then n = ?
GIÚP MÌNH VỚI:
If 3/7 > 2/n > 3/8 and n is a natural number then n = ................
1.If 3/7>2/n>3/8 and n is a natural number then n=
2.The ratio of two number is 1.4 and their sum is 36.The smallest number is
3.Form the smallest 5-digit odd number using all the digits below
9 0 6 5 1
4.Which of the following fraction is greater than 1/3 ?
3/8 1/9 2/7
5.Mrs.Jane buys 10kg of flour .She use 1/6 of it to make a cake and 1/3 of it to make grade pies.How many kilograms of flour are left?
1.The term 215th of the expression A=1-7+13-19+25-31+⋯ is...
2.The number of values of n such that n2+34 which is a square number is...
3.Given a division If dividend and divisor are increased to 90 and 6 units respectively,then the quotient and the remainder are not changed the quotient is...
Giúp mình với
Question 1:
The least common multiple of 330; 65; 15 is
Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are
(Write numbers in order from the least to the greatest and use ";")
Question 3:
The common factors of 18 and 27 are
(Write numbers in order from the least to the greatest and use ";")
Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times.
Answer:The number is
Question 7:
Calculate: 1×2+2×3+⋯+100×101=
Question 8:
The term of the expression A=1-7+13-19+25-31+⋯ is
Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=
Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is
Question 1:
The smallest multiple of 47 is
Question 2:
Which of following numbers is prime?
Answer:
Question 3:
The smallest factor of 82 is
Question 4:
K is a prime number and a multiple of 43. What is K?
Answer: K =
Question 5:
In the following figure, AN = 5cm and AB = 8cm. NB = cm
Question 6:
In the following figure, RQ = 12cm and PR = 17cm. PQ = cm
Question 7:
List the first three multiple of 6.
(Write numbers in order from least to greatest and use “;”)
Answer:
Question 8:
The number 55 has factors.
Question 9:
Find n such that n and n + 1 are factors of 40
Answer: n =
Question 10:
If a, b are consecutive natural numbers and is divisible by 5 and 9 then a =
If the sum of first n natural numbers starting with 1 is a 3 digit number with identical digits, find n.
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is
If 10^13 < x < 10^14 and x is a natural number then x has ...... digit(s)
