3 * 4 = 12
12 * 4 = 48
48 * 4 = 192
192 * 4 = 768
The next number in the sequence is the previous number multiplied by 4:
The next number would be 768 x 4 = 3072
N+23=19
-23 -23 Takeaway 23 from both sides
Answer is N= - 4
92 can be rounded to 90
68 can be rounded to 70
90 x 70 = 6300
180................................l.
