Số số hạng là:
(3072-3):3+1=1024
Tổng là:
\(\dfrac{3075\cdot1024}{2}=1574400\)
Số số hạng là:
(3072-3):3+1=1024
Tổng là:
\(\dfrac{3075\cdot1024}{2}=1574400\)
Câu 1: Given that is divisible by 9. What is the value of ?
Câu 2: How many elements of the set A are divisible by 9?
Câu 3:A is a set of multiples of 12 less than 12. How many elements does the set A have?
Câu 4:Find the remainder when is divided by 3.
Câu 5:Given that 511 is the sum of two prime numbers and , . What is the value of ?
Câu 6:Given that . Find the value of .
Câu 7:Given that . How many divisors does the number A have?
Câu 8:Find the natural number so that the product of and 5 is a prime number.
Câu 9:
Given that . How many divisors does the number A have?
Câu 10:
Given that . How many divisors the number A have?
1 . A is the set of factor of 12 more than 6 . How many elements does the set A have ?
2 . Find the remainder when 98387 + 1234 is divided by 9 ?
3 . given that b513 is divisible by 9 . what is the value of b ?
4 . find the remainder of 9287 when is it divided by 3
ai nhanh tay làm rùm tớ , tớ sẽ tặng cho 1 tích
Find the value of :1+2+3-4+5+6+7-8+...+97+98+99-100
Find the greatest integer value of x if 25x+3<28?
Consider the set of the first one hundred natural numbers {0,1,2,3,…,99}. Let k be the sum of digits of a number in the set. Find the value of k such that the number of numbers whose digits add up to the same value is a maximum.
The number N is the product of two primes.The sum of the positive divisors of N that are less than N is 2014.Find the value of N.
LÀM VẬY ĐÚNG KO???
Bài thi số 1
Điền kết quả thích hợp vào chỗ (...):
12:09
Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)
Câu 1:
The succeeding number of -7 is 7
Câu 2:
Given that M is the midpoint of the segment AB. Calculate the length of the segment MB if AB = 10cm.
Answer: MB=5cm
Câu 3:
What is the absolute value of -4?
Answer: The absolute of -4 is4
Câu 4:
Find the value of
Answer: A=5
Câu 5:
Given that the distance from point a to point -1 on the number line is 7. Find a if a > 0.
Answer: a=6
Câu 6:
Find the opposite number of .
Answer: It is -28
Câu 7:
Find the greatest negative integer.
Answer: It is -1
Câu 8:
Given a segment AB = 4cm. Let C be a point such that A is midpoint of segment CB. Find the length of segment CA.
Answer: CA=4cm
Câu 9:
Given 20 points. Draw the lines through the 2 points of these 20 points. How many lines are there if only 3 of 20 points are aligned?
Answer: There are 188 lines.
Câu 10:
Find the smallest natural number which has exactly nine divisors.
Answer: 36
C=3+6+12+24+48+...+3072