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I was a bit confused so I thought I should ask here. In questions such as "indicate the type of bonding holding the atoms or ions in the compound together"...do you write either ionic/covalent/metallic or do you have to mention intermolecular forces as well (polar/non-polar, hydrogen bonding...

3) Bob, Betty, Ben, Brad and Belinda are to be seated at a round table. In how many ways can this be done: a if there are no restrictions, b if Betty sits on Bob’s right-hand side, c if Brad is to sit between Bob and Ben, d if Belinda and Betty sit apart, e if Ben and Belinda sit apart, but...

21 Numbers less than 4000 are formed from the digits 1, 3, 5, 8 and 9, without repetition. a) How many such numbers are there? b) How many of them are odd? c) How many of them are divisible by 5? d) How many of them are divisible by 3? Can somebody please help me with part c and d

14 a How many seven-letter words can be formed without repetition from the letters of the word INCLUDE? b How many of these do not begin with I? c How many end in L? d How many have the vowels and consonants alternating? e How many have the C immediately following the D? f How many have the...