For the following questions answer them individually
In the following question, select the missing number from the given series.
1, 3, 6, 11, 18, ?
From the given alternative words, select the word which cannot be formed using the letters of the given word.
The age of Rakhi is twelve times that of her daughter Anubha. If age of Anubha is 3 years now, then what was the age of Rakhi, 2 years earlier?
Which one of the answer figures shall complete the given question figure ?
Select the correct option that will complete the series.
18, 12, 5, -3, -12, _____