NB
3,9,21,39,63.
We note that
#1;The difference between 3 & 9 = 6
#2 ;The difference between 9 & 21 = 12 ( 2 x 6)
#3 ; The difference between 21 & 39 = 18 ( 3 x 6)
#4 ; The difference between 39 & 63 = 24 ( 4 x 6)
So it follows
#5 ; The difference between 63 & X = ( 5 x 6 = 30 )
So 63 + 30 = 93 The answer !!!!!
102
Then the number is 21 because 3 times 21 = 63
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
21. The number subtracted doubles in each succession... 63 is 3 less than 66... 57 is 6 less than 63... 45 is 12 less than 57. So 21 is 24 less than 45.
1/3 of 63 is 21.
A single number, such as 18233039, cannot define a series.
63
39. The rule here is starting with the number 9, add (-6 + sequence number * 6). 9 + (-6) = 3 3 + 0 = 3 3 + 6 = 9 9 + 12 = 21 21 + 18 = 39 39 + 24 = 63
39 / 3 = 13 63 / 3 = 21
63 / 3 = 21The middle number is 21The odd numbers next to 21 are 19 and 2319 + 21 + 23 = 63
The numbers in the sequence are decreasing by 8 each time. Therefore, the next number in the sequence is 47 - 8 = 39.
Well 63 divided by 3 equals 21. So 3 times 21 equals 63. 21 is that number.
Then the number is 21 because 3 times 21 = 63
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
Number of neutrons = Mass number - atomic number = 63 - 24 = 39
21. The number subtracted doubles in each succession... 63 is 3 less than 66... 57 is 6 less than 63... 45 is 12 less than 57. So 21 is 24 less than 45.
The factors for the number 63 are 1, 3, 7, 9, 21, and 63.
33% To find out this out, subtract the larger number by the smaller number (63 - 42). Then divide the result (21) by the original number (63) and then you get the answer (21 divided by 63 = 0.333... = 33.333...%