5
$tax_query = array(
'relation' => 'AND',
array(
'relation' => 'AND',
array(
'taxonomy' => 'statistics',
'terms' => 'statistics',
'field' => 'term_id',
'operator' => 'AND',
'include_children' => true,
),
),
array(
'relation' => 'AND',
array(
'taxonomy' => 'statistics',
'terms' => 'statistics',
'field' => 'term_id',
'operator' => 'AND',
'include_children' => true,
),
),
array(
'relation' => 'AND',
array(
'taxonomy' => 'statistics',
'terms' => 'statistics',
'field' => 'term_id',
'operator' => 'AND',
'include_children' => true,
),
),
array(
'relation' => 'AND',
array(
'taxonomy' => 'statistics',
'terms' => 'statistics',
'field' => 'term_id',
'operator' => 'AND',
'include_children' => true,
),
),
array(
'relation' => 'AND',
array(
'taxonomy' => 'statistics',
'terms' => 'statistics',
'field' => 'term_id',
'operator' => 'AND',
'include_children' => true,
),
),
);