this is basically a mathematics...
The missing number is 91. The pattern is looking at the sequence in blocks of five numbers.
The first three numbers in each block follow the pattern 2.3.4, 3.4.5, 4.5.6, 5.6.7, 6.7.8, ..... i.e. each subsequent triple starts with the middle number of the preceding triple, and continues counting order for the remaining two numbers in the triple.
The fifth number in each block is the product of the second and third numbers of that block ; i.e. 3(4)=12, 4(5) = 20, 5(6)=30, 6(7)=42, 7(8)= 56,....
The fourth number in each block is the product of the second number and a number in the sequence of consecutive odd numbers starting with 5; i.e. 3(5)=15; 4(7)=28; 5(9)=45, 6(11)=66, 7(13)=91,...
by chipcat6 years ago
The nth term of a sequence is 3n + 4 what is the 8th term
by Iamsam5 years ago
Of the three numbers, the sum of the first two is 45; the sum of the second and third is 55 and...Of the three numbers, the sum of the first two is 45; the sum of the second and third is 55 andthe sum of the third and...
by jaydawg8084 years ago
Do you have a lucky number?Mines is 4, 5, and 7.
by heartnet048 years ago
if 2=33=44=5then seven?
by acym7 years ago
A number is thrice a number.The sum of their reciprocals is 4. Find the numbers.
by Grace Marguerite Williams13 months ago
What is THE SMALLEST number that can be divided by 2,3,5,6,10 and 15?
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