<prompt> Which of the following is the test for immediate memory?Serial 100-7 subtraction test up to 4 stepsDigit span forward upto 5 digits with 2 skips allowedDigit span backwards up to 5 digits with 2 skips allowedSerial 20-1 subtraction test up to 5 steps  <response>: Immediate memory test 1 Digit span test - two types-digital forward test and digital backwards test - Forward up to 5 digits is considered normal . - Backward up to 4 digits is considered normal. 2 Serial 7 subtraction test - subtract 7 from 100 up to 5 steps 